氮、磷、钾肥对大葱商品性状及其产量的影响  

Effects of N,P and K application on merchandise properties and yields of welsh-onion(Allium fistulosukm)

作　　者：林昌华[1,2,3] 白由路[2] 罗国安[4] 谢祝捷[5] 

机构地区：[1]韶关学院,英东生物工程学院,广东韶关512005 [2]中国农业科学院农业资源与农业区划研究所,北京100081 [3]华南农业大学资源环境学院,广东广州510642 [4]上海农业科学院环境科学研究所,上海201106 [5]上海农业科学院园艺科学研究所,上海201106

出　　处：《植物营养与肥料学报》2009年第3期649-655,共7页Journal of Plant Nutrition and Fertilizers

基　　金：上海市科技兴农重点攻关项目[农科攻字(2004)第2-8]资助

摘　　要：应用311-A拟饱和最优回归设计,通过氮、磷、钾肥配比田间试验,建立大葱施用氮、磷、钾肥对大葱株高、葱白直径、产量及施肥利润的效应函数。结果表明,株高极大值氮、磷、钾优化施肥组合为N 371.30、P_2O_5 157.50、K_2O 309.58 kg/hm^2,此时的株高为92.88 cm;葱白直径极大值氮、磷、钾优化施肥组合为N 350.63、P_2O_5 157.50、K_2O 225.00 kg/hm^2,此时葱白的直径为1.769 cm;最高产量的氮、磷、钾优化施肥组合为N 394.08、P_2O_5 193.62、K_2O 225.00 kg/hm^2,此时产量为55805.06 kg/hm^2;最佳施肥利润的氮、磷、钾优化施肥组合为N 391.35、P_2O_5 192.97、K_2O 225.00 kg/hm^2,其最佳施肥利润达136865.60元/hm^2,经济产量达55802.74 kg/hm^2。The effects of N, P and K application on stem length, stalk width, yield of welsh onion （ Allium fistulosukm） and benefit of the fertilization were studied in the field by using the 311 -A optimum regression design of supposed saturation. The results show that the optimum N, P and K application amounts for the maximum stem length of welsh-onion （92.88 cm） are N 371.30,P2O5 157.50, and K2O 309.58 kg/ha; the optimum application amounts for the maximum stalk width of the crop （1.769 cm） are N 350.63, P2O5 157.50, and K2O 225.00 kg/ha; and those for the maximum yield （55805.06 kg/ha） are N 394.08, P2O5 193.62, and K2O 225.00 kg/ha. The optimum N, P and K application amounts for the best fertilization benefit are N 391.35, P2O5 192.97, and K2O 225.00 kg/ha. The best fertilization benefit is about 136865.6 Yuan/ha with a yield of 55802.74 kg/ha.

关 键 词：平衡施肥 大葱 商品性状 产量 效应模式 

分 类 号：S633.1[农业科学—蔬菜学] S147.22[农业科学—园艺学]