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天德公社每年种大豆12,000亩,平均单产稳定在260斤以上.保证这一产量除推广优良品种、增施粪肥、及时管理外,重要的一点就是进行了人工手间苗.大豆手间苗对分枝力强,叶大叶厚,植株发达的品种和土壤肥力较高地块增产效果更明显.1980年我们进行了大豆不同复叶期间苗试验.品种为开育8号,1.8尺垄,5寸双株,每穴播3～4粒.每个处理1分地,三次重复.
Tiande commune annually grow 12,000 acres of soybean, the average yield stable at more than 260 pounds.In addition to ensure that this yield to promote good varieties, increase manure, timely management, the important point is that the artificial seedlings. Sapling seedlings on the branches Strong leaves, thick leafy leaves, developed plant varieties and higher soil fertility plots yield more obvious effect in 1980 we conducted a soybean seedling test during different compound leaves. Varieties for the development of 8, 1.8 feet ridge, 5 inches Double strain, each hole broadcast 3 ~ 4. Each treatment 1 minute, three times repeated.