为评价干旱威胁时期灌水量对粒用高粱的生长和籽粒产量的效果和有效利用灌溉水,本试验进行4个处理:每周灌溉0、1、2和3次。每次灌水20毫米。在粒用高粱抽穗至乳熟期,自7月12日至8月2日进行灌水。用压力室测量的叶片含水量受灌水量 In order to assess the effect of irrigation amount during drought threat period on grain sorghum growth and grain yield, and to effectively utilize irrigation water, we conducted four treatments: 0, 1, 2, and 3 irrigation cycles per week. Each irrigation 20 mm. Irrigating the grain with sorghum to milky date, irrigation was performed from July 12 to August 2. The water content of the blade measured by the pressure chamber is affected by the amount of water