拉萨市适宜复种的饲草燕麦品种筛选研究

通过对58个燕麦品种的基本苗、株高、鲜草产量的比较分析,筛选出最适宜在拉萨地区复种的燕麦品种.结果表明,总体表现均较好的是定燕2号基本苗40.12万株/667 m2,株高93.67 cm,鲜草产量5 976.61 kg/667 m2;远杂2号基本苗24.54万株/667 m2,株高100.78 cm,鲜草产量5 493...     

莜麦与野红燕麦杂交的细胞遗传学研究

为将野红燕麦９Ａｖｅｎａ ｓｔｅｒｅｌｉｓ Ｌ）的高蛋白,抗蚜、抗锈病等优点导入莜麦（Ａ ｖｅｎａ ｕｎｄａ Ｌ）,进行莜麦与野红燕麦的杂交研究,Ａ,ｎｕｄａ×Ａ．ｓｔｅｒｅｌｉｓ杂交（４８朵小花）,获得１个幼胚和４粒种子,杂交结实率１０．４％,Ｆ１自交结实率４８．１％,杂种Ｆ１在穗型,外秀,芒性,茎节部性状等方面与母本莜麦存在显著差异,来自野红燕麦的野生性状,如外孚绒毛,曲强芒,落粒性等均说明Ｆ１     

春小麦复种燕麦一年两茬种植技术

为了充分利用河西地区光热资源,提高有限土地的经济效益和社会效益,本文介绍了露地春小麦复种燕麦种植模式,供种植户参考.     

燕麦的栽培技术

燕麦又称莜麦、玉麦、铃铛麦,是禾本科燕麦属1年生(或越年生)草本植物。一般分为带稃型和裸粒型两大类,带稃型又称皮燕麦,裸粒型又称裸燕麦。云南栽培的燕麦品种全是裸燕麦。燕麦性喜冷凉、湿润的气候环境,适合海拔高、气温低、无霜期短的地区生产。燕麦是云南山区一种传统种植     

拉萨河谷冬青稞后复种燕麦品种筛选与经济效益研究

饲用燕麦是西藏重要的优质饲草料作物,种植面积逐年扩大。本文通过在拉萨河谷开展冬青稞收获后复种6个不同皮裸燕麦品种试验,得出:白燕10号和永久109分别为鲜干草产量最高的裸、皮燕麦品种;白燕10号理论上每公顷产鲜、干草分别为31.68t、9.66t,可带来经济效益分别为8772.6元、11556.0元;永久109理论可产鲜、干草分别为33.08t/ha、10.24t/ha,可带来经济效益分别为9333元、12484.8元。可见冬青稞收获后复种燕麦经济效益显著,适宜大面积推广应用,可为拉萨河谷农区农牧民增收致富开辟新途径。     

承德地区饲草燕麦品种鉴定试验

通过对不同燕麦品种进行鉴定试验,对其形态特征、生育期、抗逆性、籽粒产量以及不同阶段鲜草和干草产量等进行分析研究,以期鉴定出适宜承德地区种植的饲草燕麦。结果表明,坝燕6号、白燕2号抗逆性能力较强;鲜草产量在孕穗期、抽穗期、开花期和乳熟期最高的品种分别为GL381、张燕4号、GL381和坝莜3号;干草产量较高的分别为坝莜3号、坝莜18号、白燕2号和草莜1号。综合各燕麦品种的特性得出,GL381、坝莜18号、白燕2号和坝莜3号这4个品种更适宜作为饲草燕麦品种在承德地区进行推广种植。     

冬闲田燕麦饲草种植技术

燕麦营养价值丰富,是粮饲兼用型作物.本文总结了冬闲田燕麦饲草的栽培技术,包括品种选择、整地、播种、田间管理、收获等内容,以期为凉山冬闲田燕麦饲草种植提供技术参考.     

晋北水地夏莜麦多品种适宜播期试验

通过对不同播期多品种莜麦性状比较分析表明,水地莜麦在晋北地区的适宜播期为3月底至4月初。适期播种的莜麦抗逆性强,经济性状好,产量高。否则,莜麦易受高温、干旱等不良因素的影响,产量低而不稳。     

Monitoring the Sequential Cropping Index of Arable Land in Zhejiang Province of China Using MODIS-NDVI

The sequential cropping index of arable land is important agricultural information. The aim of this article is to monitor and analyze the parameter, and offer reference for agricultural production. The cropping index of arable land in Zhejiang Province, China from 2001 to 2004 was calculated using the second order difference based MODIS （moderate resolution imagine spectroradimeter） vegetation data from NASA （National Aeronautic and Space Administration） in America and the land use map with a scale of 1：25 000. It was found that the peak of the time series of the NDVI curve indicated that the ground biomass of crops reached the maximum, and fluctuated with the crops growing processes such as sowing, seeding, heading, ripeness, and harvesting within one year. Thus, the sequential cropping index was defined as the number of peaks of the time series of the NDVI curve. The sequential cropping index of all cities in Zhejiang Province, China was worked out. It is seen from the spatial distribution that the cropping index in the southwest Zhejiang Province is larger than that in the northeast. As for the temporal distribution, the sequential cropping index decreased from 2001 to 2003, whereas it increased slightly from 2003 to 2004. However, the index of arable land was relatively low, as far as the geographic position and climatic resource were concerned, and the potential of the sequential cropping index was great.     

土地当量比和复种指数的应用研究

当地当量比是耕作学中的重要概念,目前仅在间混作中初步应用,且不同教材看法不一。本文在分析间混作土地当量比应用现状的基础上,揭示了土地当量比的实质,对不同复种方式土地当量比的定义、计算公式及其应用进行了阐述,对土地当量比的意义进行了讨论。     

江苏省不同稻麦连作区野燕麦群体的多样性分析

用动态聚类法比较分析江苏省不同稻麦连作区26个样点上的麦田不同野燕麦群体的株形特征,并用石蜡切片法解剖观察其颖果的结构。结果显示:江苏省稻麦连作区麦田野燕麦种群可划分为3个聚类群体,即白稃野燕麦群体、黄(褐)稃野燕麦群体和紫稃野燕麦群体。前两个群体的特征与陕西、新疆旱旱连作区麦田野燕麦群体的特征有许多相似之处,紫稃野燕麦群体是在水旱连作区新出现的适应性群体;3种群体的野燕麦穗部和颖花的性状特征及颖果的形态结构(果毛颜色、角质层与子实皮厚度、淀粉充实度和胚乳细胞内空隙大小)均不同;野燕麦群体对不同的土壤类型、土壤pH值及土壤水分含量具有不同的适应性特征。     

内蒙古西辽河平原麦后复种饲料作物研究

针对内蒙古实施草地禁牧舍饲的畜牧业政策及西辽河平原麦后复种收入低而不稳的实际情况,于 2002年进行麦后复种饲料作物的研究.结果表明麦后复种饲料作物中,青贮玉米产量高、经济效益显著.与对照复种白菜相比,其产值超过白菜的玉米品种有 5个,尤以金山 3号效果最佳,其鲜草产量高达 91.53t@ hm- 2,干草产量 19.07t@ hm- 2,粗蛋白质产量 1.07t@ hm- 2,每公顷产值 7322元,比复种白菜产值增加 43%.生育期、病虫害抗性、耐低温性是筛选麦后复适宜品种的重要指标.     

The Quantitative Evaluation of Output Efficiency in Different Cropping Pattems

Quantitative indexes such as land equivalent ratio, yield equivalent and value of output equivalent were used to evaluate output efficiencies of different cropping patterns, i.e., sequential cropping, intercrops and crop rotation. Compared to single cropping, land use efficiencies under sequential cropping, intercrops and crop rotation were raised by 62, 38 and 21%, respectively. The unit area yield under sequential cropping, intercrops and crop rotation were raised by 63, 29 and 16%, respectively. The unit area value was also enhanced under sequential cropping and intercrops, 76 and 35% higher than that under single cropping. The paper provides a useful tool for comparing farm output efficiency and build up a theoretical basis for further research on output efficiency of various cropping patterns in the future.     

河套地区复种的可行性及技术研究

文章分析了巴彦淖尔市种植业生产情况和复种的可行性,结合目前的研究成果,认为在当前生产形势下,发展复种是破解农民增收难题途径之一;指出了目前发展复种需解决的技术问题和研究方向。     

黑龙江省西部大豆重迎茬问题调查与思考

通过对黑龙江省齐齐哈尔市综合实验站基点县市的大豆重迎茬问题进行调查研究,系统地分析了黑龙江省西部大豆生产现状、存在问题、具备的竞争力及发展潜力。     

我省北部山区大豆重迎茬减产原因及对策

探讨了北部山区大豆重迎茬病虫害加重、营养失调、土壤理化性质变劣、土壤水分过度消耗以及伴生杂草增加等减产原因;通过合理轮作、更新更换种子、推广秸杆还田、平衡施肥增施有机肥、推广深松、秋整地等科学的土壤耕作措施以及药剂防治等可以缓解大豆重迎茬造成的危害.