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膨大素是一种效益高,成本低,无残毒的新型生长调节剂,应用后不仅增加块根(茎)产量,而且提高切干率(每公斤鲜薯的烘干重)及淀粉和糖分的含量。我们经过1988年和1989年两年试验证明,社会效益十分显著,是生产上值得推广的一项新技术。1 试验材料和方法试验在忻州市董村镇进行,土壤为中壤土,有机质含量为0.9%,全氮为0.059%,五氧化二磷为0.51%,试验地亩施农家肥2500公斤,田间管理与块根(茎)类作物相同。1.1 试材甘薯,胜利百号;甜菜,晋甜3
As a new growth regulator with high efficiency, low cost and no residual toxicity, Ostophorus not only increases tuber (stem) yield, but also improves the rate of cut (dry weight per kilogram of fresh potato) and the content of starch and sugar. After two years of tests in 1988 and 1989, we proved that social benefits are very significant and that it is a new technology worthy of promotion in production. 1 Test Materials and Methods The experiment was carried out in Dongcun Town, Xinzhou City. The soil was medium loam with 0.9% organic matter, 0.059% total nitrogen and 0.51% phosphorus pentoxide. Roots (stems) crops the same. 1.1 test material sweet potato, victory 100; beet, Jin sweet 3