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黄顶菊对小麦种子和幼苗的化感效应
小麦 黄顶菊 种子萌发 化感效应,
2011/12/8
为探讨衡水湖外来植物黄顶菊的入侵机理，采用黄顶菊根和茎叶不同质量分数的水浸提液对小麦种子和幼苗进行处理，研究黄顶菊对小麦的化感效应。结果表明，黄顶菊浸提液对小麦种子发芽率、发芽势、幼苗根长和苗高均有抑制效应。小麦种子相对发芽率与黄顶菊根、茎叶浸提液质量分数均呈极显著负相关（P＜0.01）。化感效应指数和化感综合效应指数均随根、茎叶浸提液质量分数的增加而增大。黄顶菊茎叶浸提液对小麦的抑制效应大于根浸...
山东省区试小麦产量与产量构成因素的相关和通径分析
山东省区 试小麦产量 产量构成因素 通径分析
2011/9/15
采用相关和通径分析法，对山东省2008～2009年度小麦高肥组区试165个小麦品种（系）的产量及其构成因素进行统计分析。结果表明：产量构成因素的变异系数大小为：666.7m2穗数＞穗粒数＞千粒重；产量构成因素与产量的相关程度为：666.7m2穗数＞穗粒数＞千粒重；偏相关分析，666.7m2穗数和千粒重均与产量呈极显著正相关，穗粒数与产量呈显著正相关，产量构成因素之间的偏相关均极显著负相关；三个产量...
Winter wheat yield and yield components as affected by soil tillage systems
Grain yield component educed soil tillage inter wheat
2011/3/22
Eight different soil tillage systems (TS) for winter wheat after soybean crop production were compared at the chernozem soil type in Croatian Baranya region in a 4-year period (2001/2002, 2002/2003, 2...
氮硫肥配施对小麦籽粒谷蛋白大聚合体含量及粒度分布的影响
小麦 氮肥 硫肥 HMW-GS LMW-GS 谷蛋白大聚合体(GMP)粒度分布
2011/7/15
以优质小麦品种山农15为材料，研究了氮硫肥配施对小麦籽粒谷蛋白大聚合体(GMP)含量、高分子量谷蛋白亚基(HMW-GS)含量、低分子量谷蛋白亚基(LMW-GS)含量和谷蛋白大聚合体(GMP)粒度分布的调控效应。结果表明，在一定范围内，增施氮肥可提高籽粒GMP含量、高分子量谷蛋白亚基(HMW-GS)含量和低分子量谷蛋白亚基(LMW-GS)含量。增施硫肥对籽粒GMP含量无显著影响，但降低了HMW-GS...
渭北旱塬小麦高效施肥的产量及水分效应
小麦 施肥 水分利用效率 产量
2011/12/9
为给旱地小麦资源高效利用提供依据，通过不同养分配置及相应集成栽培技术处理，研究了旱作条件下小麦高效施肥的产量和水分利用效应。结果表明，在高量施肥水平基础上氮肥减少75 kg·hm-2的情况下，小麦产量增加569.85 kg·hm-2，增产幅度达8.1%；高量减氮施肥处理比农民习惯施肥处理（CK）增产11.3%，其增产幅度比高量施肥处理高8.4个百分点；高量减氮处理养分效益为4.25元·kg-1，比...
机架是耕整机上的重要结构,其品质好坏直接影响着耕整机的使用寿命。应用CATIA实现了耕整机机架模型的参数化建模,分析了耕整机工作时的受力情况,用有限元分析软件ANSYS完成对耕整机机架的有限元模型建立和强度、刚度分析,得到了机架的应力分布情况,对应力大的结构提出了改进措施,改进后效果较好。
Using precipitation effectiveness variables in indexing drought in semi-arid regions
Drought indexing precipitation effectiveness variables semi arid regions
2011/1/12
This study proposes a new drought index based on several precipitation-based parameters to quantify drought hazard in semi arid region. In addition to the practice of using only rainfall volume for in...
Influence of component crop densities and planting patterns on maize production in dry land maize/cowpea intercropping systems
Planting density planting patterns plant growth
2011/1/11
An experiment was conducted to test the effect of four plant densities (10, 20, 30 and 40,000 plants ha-1) and four planting patterns (1rowM:1rowC, 1rowM:2rowsC, 2rowsM:2rowsC and 2rowsM:4rowsC) on th...
Impacts of Rice Combine Harvesters on Economic and Social of Farmers in a village of the Tung Kula Ronghai Region.
Rice Combine Harvesters Economic Social Farmers village the Tung Kula Ronghai Region
2010/12/16
Impacts of Rice Combine Harvesters on Economic and Social of Farmers in a village of the Tung Kula Ronghai Region.
氮硫肥配施对小麦籽粒谷蛋白大聚合体含量及粒度分布的影响
小麦 氮肥 硫肥 HMW-GS LMW-GS 谷蛋白大聚合体(GMP)粒度分布
2011/7/15
以优质小麦品种山农15为材料，研究了氮硫肥配施对小麦籽粒谷蛋白大聚合体(GMP)含量、高分子量谷蛋白亚基(HMW-GS)含量、低分子量谷蛋白亚基(LMW-GS)含量和谷蛋白大聚合体(GMP)粒度分布的调控效应。结果表明，在一定范围内，增施氮肥可提高籽粒GMP含量、高分子量谷蛋白亚基(HMW-GS)含量和低分子量谷蛋白亚基(LMW-GS)含量。增施硫肥对籽粒GMP含量无显著影响，但降低了HMW-GS...
Effect of different harvest methods on olive yield and work capacity
Olive harvesting tool yield work capacity
2011/1/13
In this research, olives were harvested by four different methods (wood rake, wood stick, mechanical bough shaker + wood stick and electronic harvesting rake + wood stick) and an effort was made to de...
黑龙港区小麦玉米农艺节水技术集成模式综合评价及推广建议
黑龙港区小麦玉米农艺节水技术评价
2011/3/31
黑龙港属华北缺水低平原区，水资源不足是限制该区农业生产发展的主要因素。该区主要种植
模式为冬小麦－夏玉米一年两熟制，小麦、玉米高产主要靠超采地下水来维持。近年来，随着小麦节水
技术的推广应用，粮田产量和水分效率在逐步提高，但节水高产潜力仍然巨大。特别是从周年水资源高
效利用出发，建立区域特色的两熟一体化节水高效技术模式，十分必要。运用熵权综合评价法对“黑龙
港及鲁北平原区小麦玉米减蒸降耗农...
Grain yield stability and molecular characterization of durum wheat genotypes under heat stress conditions
Durum wheat genetic diversity heat tolerance SRAP markers
2011/1/13
The objectives of the present study are to determine the performance of six promising durum wheat genotypes for yield stability under heat stress conditions and to compare the application and utility ...
Contribution of savings and credit cooperatives to food crop production in Swaziland: A case study of smallholder farmers
Smallholder farmers savings and credit cooperatives contribution food crop production
2011/1/13
Using primary data collected in Ludzeludze and Bhekinkhosi/Mliba RDAs from 80 smallholder farmers in the 2008 cropping season, the study used a Cobb-Douglas production function model to analyze the co...