摘要
大田条件下,设置5个试验处理,即：小麦拔节期和开花期各灌溉60 mm（W1）;拔节期和开花期测定0~20 cm（W2）、0~40 cm（W3）和0~60 cm（W4）土层土壤含水量,并补灌至土壤相对含水量为70%;全生育期不灌溉（W0）;以此研究不同土层测墒补灌对小麦耗水特性和产量的影响。结果表明：土壤贮水消耗量为W3〉W1〉W2、W4〉W0,60~140 cm土层贮水消耗量W3处理最高;W3的籽粒产量最高,其水分利用效率高于W0和W4处理。这表明依据0~40 cm土层含水量测墒补灌拔节期和开花期目标相对含水量为70%的W3处理达到节水高产的效果。
In order to study the effects of supplemental irrigation based on measuring soil moisture in different soil layers on water consumption characteristics and yield of wheat, five treatments were designed under field conditions, which were irrigating 60 mm water at jointing and blooming stages （ W1 ） , measuring soil water content in 0 - 20 cm （ W2）, 0 - 40 cm （ W3 ） and 0 - 60 cm （W4） soil layers at jointing and blooming stages and supplemental irrigating to 70% of soil relative water content, and non - irrigation in the whole growth period （W0）. The results showed that the soil water consumption ranked as W3 〉 W1 〉 W2, W4 〉 W0. The soil water consumption of W3 in 60 ~ 140 cm soil layers was the highest. The highest grain yield was obtained in W3 treatment, whose water use efficiency was higher than that of W0 and W4 treatments. It indi- cated that supplemental irrigating based on measuring soil moisture in 0 ~ 40 cm soil layers to 70% of relative water content at jointing and blooming stages could save water and gain higher yield. targeted Key words Wheat; Supplemental irrigation based on measuring soil moisture; Soil water consumption; Grain yield
出处
《山东农业科学》
2014年第9期34-38,共5页
Shandong Agricultural Sciences
基金
国家自然科学基金项目(31171498)
农业部现代小麦产业技术体系项目(nycytx-03)
关键词
小麦
测墒补灌
土壤贮水消耗量
籽粒产量
Wheat
Supplemental irrigation based on measuring soil moisture
Soil water consumption
Grain yield
