抗虫棉“国抗一号”施钾增产效应

Effect of Potassium Fertilizer on Guokang No.1 Anti-pest Cotton

研究了不同施钾水平及生物钾肥对抗虫棉“国抗一号”生物学性状、经济性状及产量的影响。结果表明 ,在适宜的氮磷肥用量和管理措施的情况下 ,棉花施用氯化钾 3 75kg/hm2 产量较高 ;生物钾肥有较好的增产效应 ,施生物钾肥 3 7.5kg/hm2 ,其肥效相当于施用氯化钾 3 0 0～ 3

Based on the statistical test and variable analysis, the influene on biological character, economic character and cotton yield were researched by applying different level potassium fertilizer and biological potassium fertilizer.The result was that,in the condition that suitable quantity of nitrogenous fertilizer, phosphate fertilizer,potassium fertilizer and management,high yielding could be obtained while 25kg KCL fertilizer per 667hm 2 used in cotton field.2.5kg biological potassium fertilizer, being equal to 20～25kg KCL fertilizer in 667 hm 2 cotton field was better.