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辽阳市小北河公社通汽湾大队,于1981年清种大豆1,220亩,平均亩产352斤,其中用吸气式播种机精量播种,比人工手摆粒的增产、增收、省工。 机播和用畜力耕种的栽培形式同样都是行距1.65尺,株距0.5尺,4月15日至22日播种,亩施农家肥8,000斤,耙前散施。每亩用磷肥80斤作口肥;趟三遍地时每亩追尿素3斤。铲趟三遍,拔一次大草,8月上旬用敌敌畏熏蒸食心虫一次,管理条件基本一致。机械精播种的500亩,平均单
Liaocheng Xiaobeihe commune Tongwan Bay Brigade, in Qinghai in 1981 1,220 acres of soybean planted, the average yield of 352 pounds per mu, which used precision air seeder sowing, artificial hand swing grain production, income, labor. Machine-sowing and cultivating with antecedent cultivation are equally spaced 1.65 feet apart, with a plant spacing of 0.5 feet. Sowing from April 15 to April 22, 8,000 kg of farm manure per mu are applied to the land before raking. Per kilogram of phosphate fertilizer for manure 80 kg; trip times to recover 3 kg of urea per mu. Shovel trip three times, pulling a big grass, in early August with fodder heartworm dichlorvos once fumigation, management conditions are basically the same. Machine sowing 500 acres, the average single