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采用3因素二次饱和—D最优设计方法,研究多年生人工草地栽培措施与生产性能之间的关系,通过测定播种密度、叶面喷施“常乐”益植素日期、播种行距3因素条件下试验的各项参数,建立不同播种密度、不同叶面喷施“常乐”益植素日期、不同播种行距对高寒牧区多叶老芒麦地上部分牧草产量、种子产量关系的函数模型:y1=3.43+0.177x1+0.133x2+0.097x3+0.024x1x2+0.06x1x3-0.02x2x3+0.168x12-0.1x22-0.22x32,y2=49.6+1.2x1-1.9x2+2.2x3+3.3x1x2+3.1x1x3+7.3x2x3-7.7x12-6.9x22+4.9x32,并提出高寒牧区多叶老芒麦高产的农艺措施,即播种密度411～929株丛/平方米、播种行距24～31cm、叶面喷施“常乐”益植素日期6月12日～7月5日。
The relationship between the cultivation measures and the performance of perennial artificial grassland was studied by the method of 3-factor secondary saturation-D optimal design. Through the determination of planting density, the date of spraying “Changle” Under different planting density, different foliar application of “Changle” prostaglandin date, different sowing row spacing on the alpine pasture multi-leaf Fritillaria aerial part of the forage yield and seed yield function model: y1 = 3.43 + 0.177x1 + 0.133x2 + 0.097x3 + 0.024x1x2 + 0.06x1x3-0.02x2x3 + 0.168x12-0.1x22-0.22x32, y2 = 49.6 + 1.2x1-1.9x2 + 2.2x3 + 3.3x1x2 + 3.1x1x3 + 7.3 x2x3-7.7x12-6.9x22 + 4.9x32, and put forward the agronomic measure of the high-yielding multi-leaf old mungbean in the alpine pastoral area, that is, sowing density of 411-929 plants per square meter, spacing of 24-31 cm, sowing of “Changle ”Benefit dates from June 12 to July 5.