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采用100L的容器,装入泥土,种植紫花苜蓿,并用能够自行沥雨的简易棚加以遮盖,研究紫花苜蓿3个生育期土壤短期缺水的影响。对照处理每周或2周浇水一次来保持土壤含水量使其达到田间持水量水平。分别对生长3~4周和6~7周的再生草停止浇水,使其处于生长期、芽期和花期的植物体产生直激。开始落叶21天计隔5周收草。芽期
100L containers were used to load the soil and planted alfalfa. The clover was covered with a simple shed that could leach itself to study the effects of soil short-term water deficit on the three growing stages of alfalfa. Control treatment Watered once a week or two weeks to maintain soil moisture to the level of field capacity. Respectively, the growth of 3 to 4 weeks and 6 to 7 weeks of regeneration of grass to stop watering, so that in the growth stage, buds and flowering of plants produce direct shock. Beginning of deciduous 21 days every 5 weeks received grass. Bud stage