水稻区域试验品种的丰产性和稳定性分析

对宁夏2005年水稻晚熟组区域试验品种进行丰产性和稳定性分析，提出其分析方法。结果表明：2002WX-913高产。同时也是适应性较广的品种，花97和2003Y-266是丰产性较好的稳产品种；宁大143、泽丰4号、丰优2000-3和丰优518无论是在丰产性方面还是稳定性方面都是较差的。     

甜玉米品种区域试验产量和试点环境的GGE双标图分析

作物品种产量和稳产性是区域试验评价的重要任务,不同品种的产量、适应性受品种基因型、环境及其交互作用影响。应用GGE双标图方法分析2017～2018年广东省甜玉米区域试验19个参试品种在7个试点的产量数据。结果表明,金百甜15在丰产性和稳产性方面综合表现最好,其适应性也最强,综合品质比对照优势明显;其次是品种HMT9、JBT28和MYT009。GGE-plot方法能够直观有效地评价品种的适应性、丰产性和稳定性。     

应用AMMI模型评价吐哈盆地陆地棉品种的稳定性和丰产性

在吐哈盆地对10个陆地棉品种（系）开展区域试验,应用AMMI模型评价陆地棉品种（系）的稳定性和丰产性。结果表明：AMMI模型能够准确评价各参试品种（系）不同试点产量的稳定性和丰产性;在参试品种（系）中,6号丰产性和稳定性均较好,9号丰产性较好,稳定性一般,4号丰产性较差,稳定性较好,8号和10号的丰产性较好,稳定性较差,其他品种的稳定性和丰产性均表现较差。     

皖棉10号的丰产,稳产及灰色多层次综合评判

本文对皖棉１０号的丰产性、稳产性和适应性分析，表明该品种是一个丰产、稳产、适应性强的新品种。为全面综合评价皖棉１０号新品种，采用灰色多层次评判。从产量性状、品质性状及生育性状三方面评判和综合评判，表明皖棉１０号超过对照泗棉３号及其它参试品种，关联度为０８３８４，最接近于理想品种。     

福建省新育成大麦品种区试结果分析与探讨

报道了福建省新育成大麦品种区试结果。两年区试中多数品种表现较好 ,其中闽麦 0 2和莆大麦 7号已参试两年 ,表现丰产、抗白粉病 ,产量构成因素也较好 ,可在适宜地区试种。从区试结果分析认为 ,近期福建大麦育种在丰产性和抗逆性 (尤其是抗白粉病 )等方面有较大进展 ,多数育成品种表现分蘖力较强、穗较多、粒大、抗白粉病、产量高 ,但品种稳产性尚需进一步提高。认为福建今后大麦育种目标应该是 ,中熟、中秆、抗逆力强、质优、丰产、稳产。育种的方向和道路应该是走多穗大粒型或大穗大粒型道路。     

中美棉花品种第二轮联合试验结果剖析

通过试验，阐述了中美双方品种在不同生态地区的丰产性、早熟性、优质性和抗病性。提出了我国棉花育种今后应加强的方面。     

花生新品种天府9号丰产稳产性分析

用四川省花生品种区试资料,按国内近年使用的方法进行丰产稳产性分析。在１９８９～１９９３年两轮省区试先后１２个花生品种中,天府九号丰产稳产性最好,已在１００％的程度上达到了阶段性目标品种的要求。通过分析比较,认为关联度分析和高稳系数分析是测定农作物品种丰产稳产性比较合理的方法。     

甘蓝型春油菜品种丰产性和稳产性的测定

推广应用于大田生产的作物品种,除必须具有优良品质外,更主要的是必须具有丰产性和稳产性。 品种的丰产性是指品种在单位面积上获得经济价值产品最高产量的能力;品种的稳产性是指品种的适应性,它包括适应的范围和适应的程度。适应性的问题,不仅与个体和群体的特     

基于R语言的GGE双标图在花生高产稳产和适应性分析中的应用——以我国北方片小粒花生新品种安花3号为例

为更科学准确地评价花生品种的丰产稳产性和广适性,提高品种选育和推广效率,本研究采用基于R语言的GGE双标图,分析了2018-2019年国家(北方片)花生新品种多点试验小粒组中安花3号等参试品种的丰产、稳产性和适应性。结果表明：安花3号在两年品种试验中的丰产性突出,稳产性优良;在两年试验的综合性排名双标图中,距理想品种中心点最近,高产稳产性综合表现均排名第一;在参试品种中适应性最广,适宜种植区涵盖我国北方河南、山东、河北、辽宁及山西等省份;与对照品种花育20号比较,安花3号在我国北方小粒组大部分区域有明显种植优势。综上,安花3号是具有丰产性、稳产性和广适性的优良品种。本研究为安花3号的育种利用和生产推广提供了理论依据与参考。     

北方春大豆中早熟区域品种适应性综合分析

通过试验确定,合交05729建议作为丰产稳产性品种试行推广;H05-134和公交05215-6丰产性好,稳产性一般,建议推广时注意年际间的产量稳定性变化;黑农66、垦08-8546和宾丰07-3906建议作为优质苗头品种试验推广,其他参试品种在丰产性、稳产性、抗逆性、品质或品种纯度中存在一定缺陷,推广应用价值不大。     

夏大豆的产量潜力与高产栽培技术

本文通过对大豆的产量构成因素，耕作栽培条件对产量的影响，河南大豆生产中存在的问题，省内外的高产实例四个方面，分析了夏大豆的产量潜力，并针对目前河南大豆单产水平较低的状况及高产经验，提出了以选用优良品种为基础，以培育壮苗全苗为前提，以精细管理为保证，配合应用植物生长调节剂等六条高产栽培措施。     

晚播对大豆产量及性状的影响

通过对7月5日至7月25日晚播条件下大豆生长发育研究表明，每晚播5d，株荚数分别降低19．7％、29．6％、51．9％、56．3％。株粒数分别降低14．6％、24．8％、47．6％、60．3％。而对百粒重影响不大。减产率19．0％-72．3％，达极显著水平。7月15日以前播种，可获得70％以上的产量，且能正常成熟，7月20日后播种，仅能获得50％以下的产量，且不能正常成熟。     

Independence of dry matter yield and leaf yield among perennial ryegrass varieties differing in seasonal yield distribution

Four varieties of perennial ryegrass ( Lolium perenne L.), (Ba11316, Merlinda, Morgana and Talbot), with similar ear emergence dates but differing in seasonal yield distribution were compared over two harvest years (1992 and 1993) in a small plot trial employing six levels of fertilizer N (100 to 600kg Nha⁻¹ year⁻¹ applied monthly as split dressings). In each year, a conservation cut in May was followed by five further harvests at monthly intervals. Herbage samples from each of the twelve harvests were separated into leaf lamina and other tissues, and the yield of leaf lamina calculated. The percentage of flowering tillers was determined in May and July of each year, Ba11316 produced significantly more dry matter (DM) than the other three varieties at six of the twelve harvests, but its total DM yield over all twelve harvests was 5% less than Merlinda and 3% less than Morgana, owing to lower yields of reproductive growth in May of both years. Varieties also varied in mean leaf content of the herbage over all harvests, Ba11316 being 69 g kg⁻¹ higher than that of Merlinda. Differences among the varieties in leaf content were primarily because of difference in proportion of flowering tillers, Ba 11316 having a lower proportion of flowering tillers than the other three varieties. However, the mean leaf content of the tetraploid Merlinda was significantly lower than that of Morgana although these two varieties had a similar mean percentage of flowering tillers. Despite its lower total DM yield, Bal 1316 produced 16% and 14% more leaf over the two harvest years than Merlinda and Morgana respectively. Total leaf yield of Talbot was significantly higher than that of Merlinda and Morgana, although Talbot had been developed twelve years earlier than the other two varieties.     

Soil property predictors of soybean yield using yield contest sites

State yield contests offer a unique opportunity to examine the high end of crop productivity. Yield-contest-entered and average-yielding areas on the same or a similar soil can provide large yield and soil property variations to better examine the relationships among various near-surface soil properties and soybean (Glycine max L. [Merr.]) yield. The objective of this study was to evaluate the relationships among a suite of near-surface soil properties and soybean yield across average- and high-yield areas using state yield-contest sites. Multiple regression analyses were conducted to evaluate best-fit relationships among various soil physical, chemical, and biological properties and yield separately for average- and high-yielding areas and for data combined across yield areas. Soybean yield variation was most explained for the high-yield-area dataset (R² = 73%) and less explained for the average-yield-area (R² = 51%) and the combined (R² = 50%) datasets. Extractable soil Ca and S explained the largest proportion of yield variation (37% and 31% of total sum of squares) in the high-yield setting and both were inversely related to yield. A better understanding of the soil environment may be a key component of more frequent attainment of the 6270 kg ha^?1 (100 bu acre^?1) soybean yield mark. Additional soil properties, beyond those evaluated in this study, may need to be included for a more complete understanding of the soil environment that is associated with high-yield soybean production.     

氮肥用量对水稻产量及产量性状的影响

试验结果表明,氮肥用量在0-200 kg／hm2的范围内,产量随氮肥用量的增加而提高,氮肥施用量40-240 kg／hm2比CK(无肥区)增产38．90%-169．45％,比只施用磷、钾肥的处理增产16．99％-129．94％。氮肥用量增加,单穴穗数、穗粒数增加;饱满千粒重、混合千粒重和饱满粒率下降。穗颈长、穗长、一次枝梗和二次枝梗数量、着粒密度增加;植株高度、单穴草重、生物产量、谷草比和经济系数提高。适宜的氮肥用量为160- 200 kg／hm2,不仅增产率高,而且其它性状也能得到改善。     

氮肥用量对水稻产量及产量性状的影响

试验结果表明,氮肥用量在0～200 kg/hm^2的范围内,产量随氮肥用量的增加而提高,氮肥施用量40～240kg/hm^2比CK（无肥区）增产38.90%～169.45%,比只施用磷、钾肥的处理增产16.99%～129.94%.氮肥用量增加,单穴穗数、穗粒数增加;饱满千粒重、混合千粒重和饱满粒率下降.穗颈长、穗长、一次枝梗和二次枝梗数量、着粒密度增加;植株高度、单穴草重、生物产量、谷草比和经济系数提高.适宜的氮肥用量为160～200 kg/hm^2,不仅增产率高,而且其它性状也能得到改善.     

Soybean yield and yield components as influenced by the single and repeated flaming

Field experiments were conducted to study the impact of single and multiple flaming on crop injury, yield components, and yield of soybean. The goal of this experiment was to determine the number of the maximum flaming treatments which soybean could tolerate without any yield loss. The treatments consisted of a non-flamed control, and broadcast flaming conducted one time (at VC-unfolded cotyledon, V2-second trifoliate, and V5-fifth trifoliate), two times (each at VC and V2, VC and V5, and V2 and V5 stages), and three times (at VC, V2, and V5 stages) resulting in a total of eight treatments. All plots were kept weed-free for the entire growing season by hand hoeing. A propane dose of 50 kg ha⁻¹ was applied with torches parallel to the crop row and at an operating speed of 4.8 km h⁻¹ for all treatments. The response of soybean was measured as visual injury ratings (at 7 and 28 days after treatment – DAT) as well as effects on yield components and yield. Broadcast flaming conducted once (at VC or V5 stage), as well as twice (at VC and V5 stages) exhibited the lowest injury of about 8% at 28 DAT. Any treatment that contained flaming at V2 stage resulted in more than 70% injury at 28 DAT. The highest crop yields were obtained from the non-flamed control (3.45 t ha⁻¹) and the plots flamed once at VC (3.35 t ha⁻¹), V5 (3.32 t ha⁻¹), and two times at VC and V5 (3.24 t ha⁻¹), which were all statistically similar. Soybean flamed at V2 stage had lower yields (1.03 t ha⁻¹ at V2, 0.46 t ha⁻¹ at VC and V2, and 0.38 t ha⁻¹ at V2 and V5). The lowest yields were in soybean flamed three times (VC, V2, and V5 stages), which yielded only 0.36 t ha⁻¹. These results indicate that soybean could tolerate a maximum of two flaming treatments at VC and V5 growth stages per season without any yield reduction.     

寒地水稻产量及构成要素关系研究

通过对影响水稻产量性状的灰色关联度、相关性及逐步回归分析,结果表明:产量构成四要素对产量的贡献依次为穗粒数>穗数/㎡>千粒重>结实率;穗粒数与实际产量之间有正相关性,其它与产量呈较弱的负相关性;产量构成因素与产量的多元逐步回归模型为■:=283.6605+0.4863X1+2.6405X2+0.6511X3+1.4269X4,回归方程中穗粒数偏回归系数最大。因此,在制定水稻高产栽培措施时,应在稳定平方米穗数的基础上,提高穗粒数,是获得高产主要途径之一。栽培上采取的措施是倒4叶后半叶酌情施N肥和倒2叶采用间歇灌溉。     

水稻新品种盐粳456

盐粳水稻是辽宁省盐碱地所以盐丰47为母本,辽粳207为父本进行有性杂交,后代按系谱法进行选择,育成的高产、优质、多抗水稻新品种。一般产量650-700kg／667m^2。该品种于2010年通过辽宁省品种审定委员会审定。全生育期163d,株高103．9cm,穗粒数123．2粒／穗,结实率92．1％,干粒重26g,主茎16片叶,茎叶夹角小。