黑龙江黑河市小麦和大豆的灌溉计划

以黑河市典型农作物大豆和小麦为研究对象,利用气象数据和相关研究成果,计算了黑河地区大豆和小麦的需水规律和需水量,并和降水分布和有效降水量进行对比。研究发现在小麦生长阶段内,小麦需水量和降水量基本同步,但是6月-7月份亏水量约72 mm。在大豆整个生育期内,各月有效降水量均不能满足大豆的需水量,6月份缺水量最大为88 mm,生育期内共缺水量182 mm。考虑到当地矮杆作物灌水技术一般采用喷灌,建议灌水定额采用40 mm,小麦需在6月份喷灌一次,大豆在整个生育期内喷灌4~5次,以实现小麦和大豆的高产稳产。

Irrigation Scheduling of Soybean and Wheat at Heihe City in Heilongjiang Province

In this paper,water requirement and total evapotranspiration of soybean and wheat,two typical crops in this city,were calculated using meteorological data and related research results.Besides,the crop evapotranspirations were compared with effective precipitation's distribution.Results show that the distribution of water requirement of winter wheat is in agreement with the precipitation processes,while effective precipitation amount is less by 72 mm in June and July as compared to the corresponding water re...