摘要
通过计算0-50cm每10cm土层的多年平均土壤总贮水量及其与气象条件的关联度发现,1986-2006年,农作物生长期间、有降水和灌溉情况下,0-50cm土层土壤总贮水量的变化规律为:春季为主要失墒期,是农田水、肥管理的关键期。了解农作物生长期间农田水分的变化情况、降水及灌溉对土壤水分的影响程度,可为预测土壤水分变化趋势提供参考。
By analyzing the correlation of weather conditions and annual average total soil moisture storage of every 10cm from soil surface to 50cm depth in soil.The results showed that,during crop growth period with precipitation and irrigation from 1986 to 2006,it was soil loses moisture stage in spring,which was the critical to water and fertilizer management.The conclusion could be used to forecast soil moisture and provide a scientific reference for agricultural management reasonably.
出处
《中国农业气象》
CSCD
2009年第S1期57-59,共3页
Chinese Journal of Agrometeorology
关键词
农作物
贮水量
变化规律
决策服务
Crops
Moisture storage
Change
Decision-making service
