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丰城市是我省主要棉产区之一,棉花种植主要在红壤上,据近年来在荣塘等乡试验调查,施钾比不施钾棉田,50％叶片感病期晚15～20天,初发病时间推迟7～37天,发病率低21％以上,平均增产19.4％,增产幅度为7.9～34.1％,成熟系数和强力也有所筛高,因此棉花施钾是增产提质的有效途径。现将丘陵红壤棉花施钾技术简介如下: 1.施用钾肥种类。主要有硫酸钾、氯化钾、磷酸二氢钾,氮酸钾复合肥和草木灰等,据拖船乡试验,硫酸钾、氯化钾及复合肥三者增产幅度相近,所以,可在三者之间任意选择,在三者都没有的情况下,可用草木灰代替。
Fengcheng is one of the main cotton producing areas in our province. Cotton is mainly planted in red soil. According to the recent investigation in Rongtang and other townships, it is estimated that 50% The initial onset time delayed 7 to 37 days, the incidence of low 21% or more, an average increase of 19.4%, an increase of 7.9 to 34.1%, maturity and strength are also some high, so cotton potassium is an effective way to increase yield and quality. Now hilly red soil cotton potassium technology is as follows: 1. Application of potassium species. Mainly potassium sulfate, potassium chloride, potassium dihydrogen phosphate, potassium nitrate compound fertilizer and ash, etc., according to tug boat test, potassium sulfate, potassium chloride and compound fertilizer production increase rate of three similar, so, Between the arbitrary choice, in the absence of three cases, the available ash instead of.