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沙打旺、紫花苜蓿等多年生人工草地与一年生高产优质的饲料作物轮作,可以大幅度提高草地生产能力。经过几年的生产实践观察,参入轮作的饲料作物,可根据情况选择下面几个品种。 1.“辽洋白”青贮玉米新品种。该品种是辽宁省农业科学院原子能研究所培育的,生育期121天,株高3米,青秆成熟,饲、粮兼收。在沈阳进行大面积比较试验,平均亩产青绿茎叶5007.9公斤,是优质的青贮原料,另收籽实449.6公斤,是良好的精饲料。1988年在生产中推广600亩,1989年推广700亩。一部分用于老龄草地更新,一般亩产茎叶3000公斤,籽实300公斤左右。
Astragalus adsurgens, alfalfa and other perennial artificial grass and annual high yield and quality feed crop rotation, can greatly improve grassland productivity. After several years of production practice observation, crop rotation into the crop, according to the circumstances to choose the following varieties. 1. “Liao Ocean white” silage corn varieties. The variety is Liaoning Academy of Agricultural Sciences Institute of Atomic Energy nurtured, growth period of 121 days, plant height of 3 meters, green stalk mature, feed, grain and income. A large area in Shenyang comparative test, the average yield of 5007.9 kg per green stems and leaves, is a high quality silage raw materials, the other received 449.6 kg seed, is a good concentrate feed. In 1988 in the promotion of 600 acres of production, in 1989 to promote 700 acres. Part of the grass for the elderly to update, the general mu produce stems and leaves 3000 kilograms, about 300 kilograms of seed.