紫花苜蓿综合丰产栽培技术研究

Study on Composite and Fertility Cultivate Techniques of Lucerne

应用正交试验方法，通过对不同苜蓿品种、不同种植密度、灌水次数、不同施用化肥量的各种组合两年产草量比较试验，明确了施用化肥在各因素中的主导作用，筛选出了每公顷基施颗粒磷肥（P2O5含量12％）750kg、种施复合肥（含N24％-P2O5 12％-K2O 6％）150kg、现蕾期施复合肥300kg；品种为中苜1号；灌水为冬灌、春灌和第一次刈割后灌水；播种密度1012．5万粒／hm^2的搭配组合增产效果较大，比其他水平组合增产3．2％～43．5％。

Using the straight mating way, through different kinds of lucere, planting density and irrigate frequency as well as different quantity of chemical fertilizer which involves a comparative experiment of grass amount, to make splicit the leading role of using chemical fertilizer among in all the factors and then in twoyears 750 kilometres, phosphate fertilizer（P2O5 12%） to hectare land 150 kilometres compound fertilizer （include N 24%-P2O5 12%-K2O 6%） and another 300 kilometres when come up the flower bud. The variety is zhongmu No.1 and irrigate in winter, spring and the first time of mow grass. The effect of 1 012.5 million/ha planting density is the best and increase production 3.2% -43.5% than others.