钾肥施用对棉花产量、品质和养分吸收的影响  

Effects of Several K Fertilizers on Cotton Production, Quality and Nutrient Uptake

作　　者：章海霞[1] 郑诗樟[1] 樊俊[1] 付庆灵[1] 胡红青[1] 黄展林 常晓虎 

机构地区：[1]华中农业大学资源与环境学院,武汉430070 [2]浙江浙农爱普贸易有限公司,杭州310052

出　　处：《湖北农业科学》2010年第12期3015-3018,共4页Hubei Agricultural Sciences

基　　金：浙江浙农爱普贸易有限公司资助项目(20071101);国投新疆罗布泊钾盐有限责任公司资助项目(20090623)

摘　　要：为揭示不同钾肥对棉花产量、品质和养分吸收的影响,在施用N、P的基础上,选用等钾量的硫酸钾、硫酸钾镁、氯化钾,在荆门市沙洋县进行了田间小区试验。结果表明,增施钾肥能改善棉花的经济性状,显著提高棉花产量。硫酸钾、硫酸钾镁、氯化钾处理的棉花产量分别比不施钾增产10.2%、12.7%、8.4%,在纤维品质上,硫酸钾镁、硫酸钾处理优于氯化钾处理。钾肥促进棉花对N、P、K的吸收,硫酸钾、硫酸钾镁、氯化钾对养分的吸收增加幅度分别是N23.6%～26.9%,P12.0%～13.3%,K27.1%～29.7%,即对K的吸收影响最大,N素次之,P最低。由于硫酸钾镁的价格比硫酸钾高,故从整体肥效和经济方面考虑,硫酸钾更利于棉花的增产优质。To investigate the effects of different varieties of K fertilizer on cotton production and quality, the field experiments were carried out at Shayang County, Hubei Province. The results showed that the K application accompanied with N and P fertilizers improved the yield and quality of cotton. K2（Mg）SO4 or K2SO4 treatment had higher cotton production and quality than KCl treatment. Moreover, K2（Mg）SO4 and K2SO4 fertilizer application increased the content of N, P, K in cotton. Regarding to the price difference of K2（Mg）SO4 and K2SO4, the K2SO4 fertilizer was recommended for cotton planting.

关 键 词：钾肥 棉花 品质 养分含量 

分 类 号：S562.062[农业科学—作物学]