淮安地区气候条件对小麦产量的影响

分析结果表明 ,小麦生育前期的积温、中期的低温、中后期的光照和后期的灾害性天气是影响小麦产量的主要因素 ;在产量构成因素中 ,以单位有效穗数贡献最大 ,其次是穗粒数和千粒重

Primary Study on Effect of Climate Condition on Wheat Yield

The experiment showed that wheat panicle number, grains per spike and grain weight were related to climate condition in the growth area. The regressive equation between tillering ability, effective panicle rate, panicle number, grain weight and wheat yield was established. The quantitative relationship between wheat yield and its components was found. The results showed that the accumulated temperature in early period, the low temperature in middle period, the weak light in middle-late period, the disastrous climate in later period of wheat growth were important factors affecting wheat yield. In wheat yield and its components, the biggest distribution was the number of panicle per 666.7m2, the next was grain number per spike and 1000-seed weight.