论文部分内容阅读
1997年 1月至 1 998年 6月在郑州水分试验场进行了小麦田覆盖期、覆盖量和土壤水分处理试验 .结果表明 ,覆盖是一种行之有效的保墒增产措施 .不同覆盖期、不同覆盖量和不同土壤水分对小麦干物重、叶面积、蒸腾强度、产量和水分利用效率有着显著的影响 .覆盖期、覆盖量和土壤水分含量的最佳结合点为 :冬前小麦停止生长之日、55%～ 70 %土壤相对湿度、450 0～ 60 0 0 kg/ hm2覆盖量 .在此状况下 ,产量可增加 1 8.5% ,水分利用效率提高 2 2 .1 % .
From January 1997 to June 1998, Zhengzhou wheat field experiment was conducted to test the coverage, coverage and soil moisture of wheat field experiment.The results show that the covering is an effective measure to increase soil moisture and increase yield. Covering amount and different soil moisture had a significant effect on dry matter weight, leaf area, transpiration intensity, yield and water use efficiency of wheat.The optimal combination point of coverage, cover amount and soil moisture content was as follows: , 55% ~ 70% soil relative humidity and 450 ~ 60 000 kg / hm2 coverage.In this condition, the yield could increase by 8.55% and the water use efficiency by 21.2%.