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抗旱剂又名黄腐酸,是从风化煤中提取的一种腐殖酸,分子量较低,组分复杂,含有碳、氧、氢、氮、硫等元素,活性基团含量较高,是一种调节植物生长的抗蒸腾剂,对抗干热风、土壤干旱有明显作用.1988年山西省屯留县全县喷洒10万亩,增产小麦113.4万公斤,投入产出比1∶18.4,效益十分明显.
Drought-resistant agent, also known as fulvic acid, is a kind of humic acid extracted from weathering coal. Its molecular weight is low and its components are complex. It contains elements such as carbon, oxygen, hydrogen, nitrogen and sulfur, and the content of active groups is high. An anti-transpiration agent that regulates the growth of plants has a significant effect against dry and hot winds and soil drought. In 1988, 100000 mu of wheat was sprayed in Tunliu County, Shanxi Province, with a yield of 1.134 million kg of wheat and an input-output ratio of 1:18.4 obvious.