摘要
通过对开垦的高盐碱生荒地 ,在滴灌条件下 ,覆膜甜菜的肥和水效应分析表明 :在盐碱地土壤相对含水率在 6 5 97% ,氮肥用量在 1 2 9 1 4kg/hm2 范围内 ,产量随用水量和氮肥投入增加而增加 ,超过此用量 ,产量反而下降 ,而最经济的用量是土壤相对含水率为 44 31 % ,氮肥用量为 1 2 7 2 0kg/hm2 。
The paper analyses the effects of water and fertilizer on covering film beet ,in salinization wasteland through trickle irrigation system.The purpose is to provide rational quantity of fertilizer and irrigation,to gain the high yield and good quality.The result shows that beet product can be increase with the rising quantity of water and nitrogenous fertilizer,when relative moisture content within 65.97% ,and nitrogenous fertilizer within 129.14kg/hm\+2.The product will drop when the application exceeds the highest quantity.Meanwhile,the economical relative moisture content is 44.31%,and nitrogenous fertilizer is 127.20kg/hm\+2.
出处
《中国甜菜糖业》
2000年第3期19-21,共3页
China Beet & Sugar
