陇东黄土高原冬小麦生长量与气象要素相关分析

对陇东黄土高原半湿润半干旱气候区冬小麦生长量、灌浆速度等指标与气象要素、水分因子、生长势、产量以及产量构成要素进行了相关分析,结果显示春季营养生长阶段,发育期降水对生长量正效应显著,光照、积温等光、热要素对生长量负效应显著。进入生殖生长阶段以后,发育期降水对生长量、产量和灌浆速度的影响逐步减弱,光、热要素由前期的负效应转变为正效应,光照对陇东冬小麦后期生长和产量形成尤为重要。而进入生殖生长期以后,由于降水对光照的影响,前期土壤水库蓄水成为冬小麦有效耗水的主要来源。

Correlation analysis of growth quantity and meteorology factors of winter wheat in loess plateau of Longdong

This article analysis relativity of winter wheat growth mete ?grouting rate etc with weather-factor?water-gene?growth-impetus?output and structure factor of output in semi-wetness and semi-arid climate region on Loess Plateau of Longdong. The result shows: precipitation of growth-time have notability positive domino offect and factor of light and heat have notability bear domino offect to growth mete in springtime-growth phase of nutrition. After entering growth phase of procreation, infection of precipitation in growth-time to growth mete?output and grouting rate is gradually weaken. Factor of light and heat change positive domino offect from bear domino offect of prophase, especially, illumination shows very importance to anaphase growth and output fashion of winter wheat in eastern Gansu. But after entering growth phase of procreation, due to the infection of precipitation to light, the sluice of soil-reservoir in prophase is the mostly origin of water efficiency consume of winter wheat.