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浙江丽水县土壤肥力较高的城关镇、丽东乡等地的秋大豆历年徒长现象严重。秋大豆徒长后由于阳光不足,通气不佳,形成节间过长,花数减少,受孕率大减,产量很低甚至颗粒无收,同时茎成蔓状给收获脱粒带来极大的困难。丽东乡农民曹樟树,1953年2亩秋大豆在6寸见方密植和增施灰肥30担(用于水稻田) 的情况下,为了防止徒长,他在初花期进行了摘心,结果有效地
Lishui County, Zhejiang Province, a higher soil fertility Chengguan Town, Lai Tung Township autumn soybeans and other places over the years of serious growth. Autumn soybeans only due to lack of sunlight, poor ventilation, the formation of internodes is too long, the number of flowers to reduce the pregnancy rate greatly reduced, the yield is very low and even crop failure, while the stem to the shape of the vine to harvest thresholding brought great difficulties. Li Dongxiang peasant Cao Zhangshu, 1953 2 acres of autumn soybean in the 6-inch square close planting and the application of ash fertilizer 30 (for paddy fields) case, in order to prevent leggy, he had in the early flowering of the topping, the results effectively