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为了正确掌握大豆生育期适宜降水量,根据淮北平原代表性试验站——五道沟试验站1964～1998年 30余年降水统计资料及相邻区域30余年大豆平均产量资料的基础上,联合运用重心描绘法和对比分析法求解出淮北地区大豆各生育阶段及全生育期适宜降水量,并分析了大豆生育期需水量平衡情况。分析证明:所求解的大豆生育期适宜降水范围与实际情况吻合,成果可靠。
In order to correctly grasp the appropriate amount of precipitation in the growing season of soybean, based on the statistical data of the precipitation in Wudaogou Experimental Station over 30 years from 1964 to 1998 and the average yield of soybean in the adjacent area for more than 30 years, the gravity center Drawing method and comparative analysis method were used to solve the suitable precipitation of soybean in all growth stages and whole growth period in Huaibei area, and the balance of water requirement in soybean growth stage was analyzed. The analysis proves that the suitable precipitation range of soybean during growth period is consistent with the actual situation and the result is reliable.