土壤水分下限对滴灌春小麦生长和产量的影响研究

Influence of Low Limit of Soil Moisture on Growth and Yield of Wheat under Drip Irrigation

通过田间试验,设3个水分处理(分别以0～60cm土层灌前土壤田间持水量的55%、60%和65%作为各处理的灌溉下限含水量临界值,灌溉上限为田间持水量的90%),分析了不同土壤水分下限状况下土壤水分下限对滴灌小麦生长和产量的影响。试验结果表明,灌前土壤相对田间持水量为65%处理的小麦生长状况较好,产量和水分利用效率较高,可以实现高产高效的节水灌溉。

Based on field experiment, 3 water treatments, in which the lower limit of irrigation water content are set as 55%, 60% and 65% of the field moisture capacity before irrigation in the 0~60 cm layer, respectively, and the upper limit is set as 90% of the field moisture capacity, are set to analyze the influence of low limits of soil moisture on the growth and yield of on wheat under drip irrigation. The test results show that the growth of wheat under the condition that low limit of soil moisture is the 65% of the field moisture capacity before irrigation is the best, the yield and water use efficiency is the highest, and the purpose of high yield and high efficiency can be realized.