[目的]研究地下滴灌不同灌水量对新牧1号杂花苜蓿种子产量及其构成因素的影响,为苜蓿种子生产提供理论依据和生产指导.[方法]在60cm等行距苜蓿种子实验地中,每行铺设地下滴灌带,单次灌水量从150到900m3/hm2设置6个不同的处理.[结果]灌水处理不同,单株花序数、每花序小花数、每英果种子数呈显著差异.当灌水总量达3600m3/hm2,单次灌水600m3/hm2时,产量最高,为832.51 kg/hm2.[结论]在苜蓿的现蕾期至结荚期增加灌水次数,能提高种子产量.地下滴灌应用在苜蓿种子生产中能起到节水增产的效果.%[ Objective] Research of the influence of different Water Volume of subsurface drip irrigation on seed yield components and seeds yield of Medicago varia Martin. cv. Xinmu No. 1 was designed to provide theoretical references and the instruction for the production of the seeds . [ Method] The underground drip irrigation belt every rows were laid and the single irrigation water was from 150 m3/ hm2 to 900m3/ hm2, 6 different treatments were installed in the alfalfa experimental site where there was a 60 cm space betweer two rows. [ Result] Different irrigation treatments have remarkable difference in inflorescence per plant, pod per inflorescence and seed number per inflorescence of alfalfa. When total irrigation amount reached 3 600 m3/hm2, and the single irrigation reached 600 m3/ hm2 , the highest yield of 832 .51 kg/hm2 can be obtained . [ Conclusion] From alfalfa’s budding; - initial flowering stage to pod stage, increasing irrigation frequency can raise seed yield . Using the subsurface drip irrigation in the production of alfalfa seeds, it can help to save water and increase the yield .
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