控释尿素与普通尿素配施对糯玉米产量和氮素吸收利用的影响

【目的】缓/控释肥料轻简化施用技术在我国玉米生产中逐步得到应用,研究控释氮肥与尿素不同比例配施对大田糯玉米产量、物质积累与转运以及氮素吸收利用的影响,为糯玉米高产高效施肥提供理论与技术支撑。【方法】田间试验于2019—2020年在江苏连云港进行,供试玉米品种为连花糯2号。在施N 225 kg/hm²水平下,设置5个普通尿素与控释尿素配施比例处理：100%普通尿素(N1)、100%控释尿素(N2)、普通氮素∶控释尿素=1∶2 (N3)、普通氮素∶控释尿素=1∶1 (N4)、普通氮素∶控释尿素=2∶1 (N5),以不施氮处理(N0)为对照。测定了糯玉米籽粒产量、植株物质积累转运与分配及氮肥利用率。【结果】5个普通尿素与控释尿素配施处理中,N3处理的增产增收幅度最大,较N1处理产量增加了30%,平均收益增加了2835元/hm2,N4和N5处理产量和经济效益大于N1处理,小于N3处理,且二者差异较小。控释尿素与普通尿素配施显著提高吐丝后干物质和氮素积累量,且以N3处理增加最明显,其次为N2和N4处理,N5与N1处理干物质积累量差异不显著。不同氮肥配施对植株氮素转运量和转运...     

不同量的包膜控释尿素与普通尿素配施在夏玉米上的应用研究

通过田间试验,研究了释放期为60 d的包膜控释尿素（PCU60）不同用量与普通尿素（U）配合基施对夏玉米产量、氮肥利用率、氮素积累量及经济效益的影响; 并比较PCU60氮素在田间及25℃静水的溶出特征。结果表明: 在施氮量相等的条件下,不同用量PCU60与普通尿素配合基施与习惯施肥相比夏玉米产量显著提高,氮素总积累量、子粒氮素积累量明显增加,氮肥利用率提高5.86%11.39%,净收入增加1303.21715.2 Yuan/hm2; 其中以PCU60氮素占总施氮量30%的经济效益最高。PCU60在田间与在25℃静水中的氮素溶出特征吻合较好; 与普通氮素配合基施氮素释放符合夏玉米的吸氮规律。     

冬小麦上短控释期尿素的适宜施用量与施用方法研究

【目的】控释尿素受土壤温度、 水分等环境条件的影响,应用效果不一。对比相同施氮量下一次性基施控释尿素与尿素分期施用,以及控释尿素和普通尿素追施对冬小麦籽粒产量、 品质, 氮肥利用率及综合经济效益的影响,可为控释尿素的合理施用提供理论和技术依据。【方法】采用大田试验,选用新麦26为供试材料,随机区组试验设计,调查了冬小麦籽粒产量、 主要品质性状、 氮肥利用率及经济效益。设两个试验,试验1: 控释尿素和普通尿素各设5个氮肥水平,即N 0、 120、 160、 200和240 kg/hm2; 试验2: 设不施氮肥、 N 200 kg/hm2总氮量下普通尿素和控释尿素均40%返青期追施3个处理。【结果】 1)与不施氮(CK)相比,控释尿素和普通尿素均可显著提高小麦籽粒产量,且随着施氮量的增加而增加,其中以分期施用普通尿素N 240 kg/hm2处理籽粒产量最高。相同施氮量下,分期施用普通尿素处理小麦籽粒产量显著高于一次性基施控释尿素处理(N 160 kg/hm2除外)。然而,返青期追施控释尿素处理小麦籽粒产量显著高于同期追施普通尿素处理,增产率达15.8%; 2)相同施氮量下,分期施用普通尿素处理较一次性基施控释尿素处理的小麦籽粒容重、 蛋白质含量、 水分含量、 湿面筋含量均有所提高,且两种尿素处理间籽粒容重在N 160 kg/hm2和N 200 kg/hm2时差异达显著水平。然而,返青期追施控释尿素处理小麦籽粒容重、 湿面筋含量、 蛋白质含量等品质指标显著高于同期追施普通尿素处理; 3)两种尿素处理氮肥农学利用率和氮肥偏生产力随施氮量的增加而降低,在相同施氮量下分期施用普通尿素处理显著高于一次性基施控释尿素处理。此外,与分期施用普通尿素处理相比,一次性基施控释尿素处理减少了小麦拔节期追肥人工成本投入,但由于一次性基施控释尿素处理籽粒产量较低和氮肥价格较高,导致经济效益相对较低。然而,试验2结果表明,返青期追施控释尿素处理氮素利用率(氮肥农学效率、 氮肥偏生产力及氮素回收率)和经济效益显著高于同期追施普通尿素处理。【结论】本研究地区较适宜的推荐氮肥施用量为N 200 kg/hm2,一次性基施控释尿素较适宜于劳力欠缺的农户,而对于个别劳力充足的农户则适宜采用分期追施普通尿素或者小麦返青期追施控释尿素的氮肥管理技术。因此,在当前农村劳动力日益减少,用工成本日益增加以及种粮比较效益持续降低的大环境下,氮素肥料合理选择和施用技术要依据实际情况而定。     

Controlled release of the herbicide norflurazon into water from ethylcellulose formulations

The herbicide norflurazon was encapsulated in ethylcellulose (EC(40)) microspheres by the solvent evaporation technique to obtain controlled release formulations. The kinetics of release of the active ingredient into the aqueous solution from different preparations was determined. It was found that the percentage release of the incorporated herbicide was a function of the composition and formation conditions of the formulations (amount of emulsifying agent, EC(40)/herbicide ratio, stirring speed, and percentage of pore-forming agent). The percentage of the herbicide release was related to the properties of the different microspheres obtained, such as particle size distribution, herbicide loading, or surface morphology. The release percentage depended inversely on the particle size of the microspheres and directly on the content of active ingredient and emulsifying and pore-forming agents. An empirical equation was used to fit the herbicide release data, indicating that the release of norflurazon from the various formulations is controlled by a diffusion mechanism. The time taken for 50% of the active ingredient to be released into water (T(50)) was calculated, showing a wide variation among the different preparations (0.95-16.4 days).     

不同土壤肥力条件下水稻控释氮肥效应及其氮素利用的研究

田间试验在湖南的衡山县和长沙县进行,探讨了不同肥力水平水稻土上水稻控释氮肥对早、晚稻的增产效果和肥料氮利用率。结果表明,在肥力水平较低的水稻土上施用水稻控释氮肥对水稻的增产效果极为显著,应当增加施用量;在肥力水平较高的水稻土上,水稻吸收土壤氮较多,肥料氮的吸收量与增产作用自然减少,应适当减少施用量。不同肥力水平的土壤上水稻控释氮肥较等氮量尿素增产4.4%～16.4%。较无氮区增产13.8%～74.5%。水稻控释氮肥在不同肥力水平土壤中早、晚稻的利用率为69.7%～86.9%,平均比等N量尿素高37.6%,且水稻控释氮素利用率的高低与土壤肥力水平有关。水稻控释氮肥作一次性全量基肥施用,氮素生产效率明显高于尿素,是增产的主要原因。     

控释掺混肥对夏玉米产量及土壤硝态氮和铵态氮分布的影响

通过田间试验研究释放期60 d的水基包膜尿素与普通尿素常规施肥用量下不同比例配合追施对夏玉米产量、肥料利用率、氮肥农学利用率、氮肥偏生产力、氮素收获指数、氮素积累量及0-60 cm土壤硝铵态氦含量动态分布的影响.结果表明:各控释掺混处理对夏玉米的产量、肥料利用率、氮肥农学利用率、氮肥偏生产力及氮素收获指数较常规施肥都有不同程度的提高,以控氮比50%处理最佳,产量和氮肥利用率分别比对照的提高9.43%和24.69%,达到显著水平;各控释掺混处理0-60 cm土壤都保持较高的硝态氮含量,至后期较常规施肥的略高,满足了玉米的生长.玉米各时期土壤铵态氮含量大致以高控氮比处理的含量高,差异不明显,但显著高于常规施肥处理的.控氮比50%处理更适合本区域玉米生产.     

Ethylcellulose formulations for controlled release of the herbicide alachlor in a sandy soil

The development of controlled-release formulations of alachlor to diminish its leaching in sandy soils, avoiding groundwater contamination and maintaining its efficacy, was studied. For this purpose, ethylcellulose (EC) microencapsulated formulations (MEFs) of alachlor were prepared under different conditions and applied to soil columns to study their mobility. The results show that in all cases the release into water of alachlor from MEFs was retarded when compared with commercial formulation. Total leaching losses in soil columns were reduced to 59% from 98%. The mobility of alachlor from EC microspheres into soil columns has been greatly diminished in comparison with its current commercial formulation (CF), above all with increasing EC/herbicide ratios. Distribution of alachlor applied as MEFs at different depths in the soil was higher in the soil surface (66.3-81.3% of herbicide applied at the first 12 cm). In contrast, the residues from CF along the complete soil column were only 20.4%. From the results of bioassays, MEFs showed a higher efficacy than CF at 30 days after the treatment. The use of ME formulations could provide an advantage in minimizing the risk of groundwater contamination by alachlor and reducing the application rates, as a result of maintaining the desired concentration of the herbicide in the top soil layer, obtaining longer periods of weed control.     

马铃薯玉米套作下控释肥对土壤养分垂直分布及养分利用率的影响

通过马铃薯玉米套作田间小区试验,研究了控释肥对土壤养分垂直分布及养分利用率的影响。结果表明,与普通肥料相比,两种控释氮肥提高了耕层土壤速效氮含量,显著降低了氮素淋失,使耕层以下土层的硝态氮含量平均减少28.60%,氮肥表观利用率平均提高了16.32%,也在一定程度上抑制了磷、钾的淋失,分别平均减少5.72%和7.03%,使磷、钾的利用率分别平均提高8.67%和10.01%。控释肥减量处理（80%常规量）与常规量控释肥处理相比,没有显著降低耕层土壤养分含量,并使耕层以下速效养分含量降低,养分利用率提高,其中硝态氮含量减少14.36%,氮肥表观利用率提高了10.22%,因此该处理为本试验中的最优处理。     

控释氮肥减量对糜子产量、氮素利用及土壤氮含量的影响

针对黄土高原旱作区糜子生产中氮肥种类单一、肥料利用效率低的问题,本试验以当地习惯施氮尿素N 120kg/hm²(TN)为对照,设置控释氮肥N 120kg/hm²(T1)、108kg/hm²(T2)、96kg/hm²(T3)、84kg/hm²(T4)、72kg/hm²(T5)和不施肥(T0)七个处理,探究不同控释氮肥处理下土壤全氮、微生物量氮、硝态氮和铵态氮含量的变化规律,分析糜子成熟期氮素积累分配、氮素利用效率及产量对控释氮肥的响应,以期为建立旱地糜子控释氮肥一次性基施轻简栽培技术提供支撑。结果表明：与施用尿素相比,等量控释氮肥可以提高糜子抽穗期和成熟期土壤全氮、微生物量氮、硝态氮和铵态氮含量分别达0.38%~5.51%、1.76%~7.63%、5.41%~11.80%和4.04%~14.77%,其中硝态氮和铵态氮含量两年均显著高于TN,随着控释氮肥减量糜子田各形态氮素均呈降低趋势,减氮量达20%以上时土壤硝态氮和铵态氮含量均显著低于TN处理。施用控释氮肥可以提高糜子成熟期氮素积累量1.97%~3.21%,增加糜子氮素向籽粒中的分配比例0.55%~1.18%,控释氮肥减量20%以上时糜子氮素积累量显著低于尿素全量基施处理。与普通尿素相比,控释氮肥提高了糜子氮肥表观利用率、氮肥偏生产力及氮肥农学利用率,增幅分别为3.29%~4.59%、3.88%~4.14%和5.01%~7.63%,其中氮肥偏生产力处理间差异达显著水平,随着控释氮肥减量糜子氮肥表观利用率、氮肥偏生产力及氮肥农学利用率均呈上升趋势。施用控释氮肥通过增加单位面积穗数和穗重显著提高了糜子产量两年分别达3.88%和4.47%,控释氮肥减量20%以下时糜子产量与尿素差异不显著。相关性分析结果表明,糜子氮素积累量与产量呈极显著正相关,氮素利用效率指标与土壤硝态氮含量相关性最强。综上所述,施用控释氮肥较尿素可显著提高糜子生育中后期土壤供氮能力,促进糜子对氮素的吸收利用进而增加产量,且在适量减氮20%时并未显著降低糜子产量,因此控释氮肥在糜子生产中有较大的应用前景及减氮潜力。     

控释尿素与普通尿素配施对冬小麦氮肥利用率的影响

在高肥力麦田中,随着氮肥施用量的不断增加,氮肥利用率下降,单位氮肥的增产量递减。氮素养分的损失不仅造成肥料的浪费,而且给环境带来潜在的威胁。为了提高氮肥的增产效益及氮肥利用率,减少氮肥对环境的污染,采用田间小区试验,研究了控释尿素和普通尿素配施对冬小麦产量、蛋白质含量、氮肥利用率及土壤硝态氮积累量的影响。结果表明,控释尿素与普通尿素配施与普通尿素单施相比,无论是相同施氮量还是减少30%的施氮量,冬小麦子粒产量都极显著增加,而且子粒蛋白质含量明显提高或不降低;同时提高了氮肥利用率,降低了土壤中硝态氮的积累量。     

茶树控释氮肥的施用效果与合理施用技术研究

采用田间试验方法研究控释氮肥不同施用量和施用次数条件下土壤养分释放动态,以及对茶树养分吸收、叶片叶绿素含量,茶叶产量和品质变化的影响。结果表明,控释氮肥能明显延长氮在土壤中的留存时间,与普通尿素相比,NH4+-N浓度明显提高并能持续较长时间;而NO3--N变化不大,使NO3--N占总无机态氮含量的比例降低。控释氮肥在土壤中的这种动态变化与茶树对氮素的吸收规律基本同步,这不仅明显促进了茶树对氮素的吸收,而且对钾和锌等矿质元素的吸收也有所增强;茶树叶片叶绿素含量提高。与普通尿素相比,控释氮肥可减少30%氮肥用量而不影响茶叶产量和品质;相同的施肥量和施肥次数或施肥次数减少一次,茶叶仍增产6.6%～24.1%,平均12.9%;茶叶品质成分,特别是游离氨基酸含量也有明显提高。     

天然木粉在包裹控释尿素上的应用

为探究木质纤维素类有机物在缓/控释肥上的应用效果,采用静水浸泡法,研究了3种天然木粉包裹控释尿素(CRU20、CRU25、CRU30)在常温条件下的养分释放规律,以及不同温度、pH值和水肥比对控释尿素养分释放规律的影响。结果表明:1)包裹控释尿素的缓释期随着包裹量的增大而变长,CRU20、CRU25、CRU30的理论缓释期分别为36、54,121d,不同的包裹量表现出不同的释放曲线模式。2)氮素释放速率受温度和pH值的影响较大,不同水肥比的差异不明显。3)包裹控释尿素释放机理为"崩溃"机制。天然木粉包裹控释尿素具有很好的推广应用价值。     

控释尿素对小麦-玉米产量及土壤氮素的影响

利用田间试验研究了包膜控释尿素对小麦-玉米产量、氮素利用效率、土壤氮素积累及移动的影响。结果表明,与施用普通尿素比较,小麦-玉米周年施用包膜控释尿素,在肥料用量减少20%和40%情况下,小麦-玉米总产量分别是100%普通尿素处理的97.4%和97.7%;控释尿素施氮量为60%处理的肥料农艺利用率和偏生产力分别比普通尿素提高11.57%和54.14%。控释尿素施氮量为80%处理的肥料农艺利用率和偏生产力分别提高6.40%和22.09%。施用控释尿素显著增加了0-20 cm土层的碱解氮和0～40cm土层的硝态氮含量;60-100 cm土层中,控释氮肥处理土壤硝态氮含量与不施氮肥处理差异不显著,普通尿素处理小麦收获后60～80 cm土层、玉米收获后60～100 cm土壤硝态氮显著高于不施氮肥处理,肥料氮素下移明显。试验结果显示,施用控释尿素增加了耕层（0～20 cm）土壤的氮素积累,减少了氮素向土壤深层移动的数量,有利于减少施肥对环境的不利影响。     

Development of a capillary electrophoresis-based immunoassay with laser-induced fluorescence for the detection of carbaryl in rice samples

A capillary electrophoresis-based competitive immunoassay (CEIA) with a laser-induced fluorescence (LIF) detector for the determination of carbaryl was developed. The method was based on the competitive reactions between fluorescently labeled carbaryl tracer (Ag*) and free carbaryl (Ag) with a limited amount of anticarbaryl antibody (Ab), and the relative amounts of each were separated and determined by capillary electrophoresis (CE) with an LIF detector. Using CEIA, equilibrium was reached in 30 min, and the analytical results were obtained within a further 8 min. The linear range and the detection limit for carbaryl were 0.16-50 ng/mL and 0.05 ng/mL, respectively. The sensitivity of this CEIA with an LIF detector was almost 14 times greater than that of ELISA, which used the same immuno-reagents. The method was also applied to the analysis of carbaryl in rice with rapid and simple sample pretreatment. The method is thus proposed as a fast and sensitive assay for the detection of carbaryl.     

不同控氮比掺混肥及其运筹方式对土壤磷钾养分和利用率的影响

通过田间试验方法研究了不同控氮比掺混肥(非控、半控和全控)和运筹方式(基施、基施和追施结合)在玉米种植过程中对土壤速效磷、钾养分供应及其利用率的影响。结果表明:控氮比52.5%掺混肥在基施运筹方式下,能够保证玉米各生育阶段尤其是生长发育中后期的土壤磷、钾养分供应,其磷素利用率最高,与其他控氮比掺混肥及运筹方式相比,其磷素利用率提高了2.85%～95.55%。控氮比52.5%掺混肥在基施运筹方式下,与控氮比52.5%掺混肥减量基施处理相比,钾素利用率降低了1.47%,但与其他控氮比掺混肥及运筹方式相比,其钾素利用率提高了6.42%～20.11%。因此控氮比52.5%掺混肥基施在生产实践中能够更好地促进玉米对磷、钾养分的吸收与利用,提高肥料利用率。     

EFFECTS OF BAG-CONTROLLED RELEASE FERTILIZER ON NITROGEN UTILIZATION RATE,GROWTH AND FRUITING OF THE ‘FUJI’ APPLE

Bag-controlled release fertilizer is a new type of controlled-release fertilizer designed to meet the needs of the large individual volume characteristic of fruit trees. The effect of bag-controlled release fertilizer on nitrogen (N) utilization, growth-rate, and fruiting was investigated using ‘Fuji’ apple trees (M. domestica Borkh. cv. ‘Fuji’/M.hupehensis Rhed.). The results showed that the available concentration of nutrients in the soil following bag-controlled release fertilizer treatment (BCRT) was more consistent than when application treatments were broadcasted. The BCRT significantly increased N use efficiency, where this was 2.7 or 1.6 times greater than one or four broadcasted treatments, respectively. Trees treated via BCRT were healthier and had more quality spurs due to more constant nutrient concentration in the soil. With the same application amount, the chlorophyll level and Pn content of BCR-treated trees were steadier and higher than those of broadcasted controls; thus, BCRT significantly increased both yield and fruit quality.     

包膜控释掺混尿素对双季稻生长及氮素利用率的影响

为了比较常规分次施肥和包膜控释掺混尿素对双季稻生长及氮素利用率的影响,在田间条件下,研究了不同施肥处理对双季稻分蘖数、叶绿素含量、各个生育期植株含氮量、稻草稻谷产量及氮素利用率等因素的影响。结果表明：（1）在早稻上,控释掺混尿素处理的以上各测试指标均高于常规分次施氮肥处理,各指标两处理之间差异均不显著（P〈0.05）。控释掺混尿素的氮肥利用率为40.08%,显著高于常规分次施氮肥的32.47%,而一次基施氮肥的利用率只有19.50%。（2）在晚稻上,常规分次施氮肥处理的稻谷产量高于控释掺混尿素处理,差异不显著（P〈0.05）,其他各项测试指标均低于控释掺混尿素处理。控释掺混尿素和常规分次施氮肥的氮素利用率分别为39.91%、39.58%,二者显著高于一次基施氮肥的28.14%。由此可见,科学合理的施用包膜控释掺混尿素可以提高双季稻生产的经济效益,提高氮素利用率,减少资源的浪费,保护土壤生态环境。     

控释、常规尿素配施对雨养区春玉米产量及氮素利用的影响

为明确宁夏南部雨养种植区玉米合理施氮方式及用量,完善高产高效栽培技术,为干旱半干旱地区玉米高产栽培提供理论与技术支持,以先玉698为试验材料,设置2个氮肥种类(控释尿素和常规尿素,纯氮量都为225kg/hm2)和4个氮肥追施量及时期(T1常规尿素基施N150kg/hm2+小口期追施N75kg/hm2;T2控释尿素基施N75kg/hm2+常规尿素基施N75kg/hm2+小口期追施常规尿素N75kg/hm2;T3控释尿素基施N150kg/hm2+常规尿素基施N75kg/hm2;T4控释尿素基施N225kg/hm2),以不施氮肥为对照,比较研究不同处理对春玉米群体物质生产、氮素运移特性和产量的影响。结果表明,在施氮量相等条件下,控释尿素与普通尿素配合(T3)一次基施比习惯施肥(T1)显著增加了玉米的产量,产量增幅为12.63%,穗粒数和粒重的增加是玉米增产的主要原因。合理增加基肥中控释尿素比例能够显著增加玉米花后和全生育期干物质积累量,同时促进玉米营养器官和籽粒对氮的吸收累积。控释尿素基施有利于氮肥农学效率、氮肥利用率和氮肥贡献率的提高,其中以T3处理最好,氮肥农学利用率和氮肥对产量的贡献率分别比T2和T4高52.12%,22.96%和35.39%,20.53%。因此,建议在宁南山区玉米高产施肥管理中以控释尿素(全部氮肥量的2/3)与常规尿素(全部氮肥量的1/3)全部基施为宜。     

Controlled release of isoproturon, imidacloprid, and cyromazine from alginate-bentonite-activated carbon formulations

Different alginate-based systems of isoproturon, imidacloprid, and cyromazine have been investigated in order to obtain controlled release (CR) properties. The basic formulation [sodium alginate (1.50%), pesticide (0.30%), and water] was modified using different amounts of bentonite and activated carbon. The higher values of encapsulation efficiency corresponded to those formulations prepared with higher percentages of activated carbon, showing higher encapsulation efficiency values for isoproturon and imidacloprid than for cyromazine, which has a higher water solubility. The kinetic experiments of imidacloprid/isoproturon release in water have shown us that the release rate is higher in imidacloprid systems than in those prepared with isoproturon. Moreover, it can be deduced that the use of bentonite and/or activated carbon sorbents reduces the release rate of the isoproturon and imidacloprid in comparison with the technical product and with alginate formulation without modifying agents. The highest decrease in release rate corresponds to the formulations prepared with the highest percentage of activated carbon. The water uptake, permeability, and time taken for 50% of the active ingredient to be released into water, T50, were calculated to compare the formulations. On the basis of a parameter of an empirical equation used to fit the pesticide release data, the release of isoproturon and imidacloprid from the various formulations into water is controlled by a diffusion mechanism. The sorption capacity of the sorbents and the permeability of the formulations were the most important factors modulating pesticide release. Finally, a linear correlation of the T50 values and the content of activated carbon in formulations were obtained.     

氮肥对粳性和糯性糜子干物质积累和产量性状及氮肥利用效率的影响

为探讨不同粳糯性糜子干物质积累、产量及氮素利用效率对不同供氮水平的响应,本研究通过两年田间试验,以粳性糜子品种陇糜13号和糯性糜子品种陇糜14号为试验材料,设置45(N1)、90(N2)和135 kg·hm^-2(N3)3个供氮水平,以不施氮为对照(CK),研究不同供氮水平下不同粳糯性糜子在开花期和成熟期的干物质积累与转运、农艺性状及产量的变化,分析氮素积累量、氮肥农学利用效率、氮肥偏生产力、氮素利用率及氮肥表观利用效率对施氮的响应。结果表明,随着施氮量的增加,不同粳糯性糜子的地上部各器官干重呈单峰曲线变化,在N₂下,开花期和成熟期糜子的茎秆干重、叶片干重、茎鞘干重和穗干重均显著高于CK(P<0.05);随着施氮量的增加,不同粳糯性糜子的氮肥偏生产力呈降低趋势,而氮素利用效率呈先降低后升高的趋势;N₂可以显著提高不同粳糯性糜子的株高、茎粗、穗长、单穗粒重、千粒重及产量,也可提升氮肥农学利用效率和氮肥表观利用率。两年数据表明,N2(90 kg·hm^-2)下陇糜13号的农艺性状、产量及氮素利用效率均优于陇糜14号。综上,本研究条件下,甘肃省会宁地区糜子的推荐氮肥施用量为90 kg·hm^-2,这对西北地区种植不同粳糯性糜子具有生产指导意义。