摘要
本文对陇东黄土高原半湿润半干旱气候区光、热、水三要素对旱地冬小麦产量的贡献进行了分析 ,得出对冬小麦产量起决定作用的农业气象要素为 :孕穗～成熟期≥ 0℃积温、全生育期降水、开春土壤水库含水量 +返青～孕穗期降水量 ,并建立了回归方程。同时对越冬期土壤水库水分损耗进行了分析 ,提出了减少越冬土壤水分无为损耗的对策 ,并对有效开发土壤水资源的增产效应进行了评估。
The relations between output and sunlight, temperature, precipitation in semi-wetness and semi-arid climate region on Loess Plateau of Long Dong were analyzed. The result showed that sunlight hours of gestate ear-autumn and ≥0°C cumulatedtemperature, beginning of spring soil water content and precipitation of return cyan—gestate ear. These are determinative agricultural climate factors. And built tropic equation. Contemporary analyse water waste of reservoir in soil in winter ,bring the countermeasure of reduce waste of water in soil in winter ,and evalutate the domino offect of increace production of exploiture the resource of water in soil.
出处
《干旱区资源与环境》
CSSCI
CSCD
2004年第6期128-131,共4页
Journal of Arid Land Resources and Environment
基金
甘肃省自然科学基金项目 ( YS981-A2 1-0 2 4)
