摘要
以Ｂｌａｎｋ作物模型为基础，采用动态规划方法确定甜菜优化灌溉制度，以期达到节水高产的目的。根据宁夏灌区平罗试验区的试验结果表明，除苗期、完熟期不需灌溉外，其余５个生育阶段均需灌溉，灌水量分别为５０ｍ３／（６６６．７ｍ２），全生育期灌溉定额为２５０ｍ３／（６６６．７ｍ２），实际根产量为３５６７．２ｋｇ／（６６６．７ｍ２）。
Based on Blank crop model, this paper has adopted the method of dynamic program to determine the optimal irrigation system of sugarbeet in Pingluo irrigation district of Ningxia. The system can save water and raise yield. According to the experiment results in Pingluo, during the whole growing period, except the seedling stage and full maturing stage, sugarbeet needs irrigation for the other five stages and the amount of water needed is 50m 3/(666.7m 2) at each stage, the total amount of irrigation water is 250m 3/(666.7m 2), the actual root yield is 3567.2kg/(666.7m 2).
出处
《中国农业气象》
CSCD
1998年第5期1-3,共3页
Chinese Journal of Agrometeorology
关键词
甜菜
作物模型
动态规划
灌溉制度
Sugarbeet
Crop model
Dynamic program
Irrigation system
