寻甸县清水海水源保护区夏播油菜氮磷钾肥效应  

Effects of N,P,K on Summer Sowing Rape in Protection Areas of Qingshuihai Lake Water-head in Xundian

作　　者：刘建香[1] 涂仕华 郭云周[1] 张国建[3] 吴杏红[3] 杨袁刚[3] 戴洪福 韩慧仙 

机构地区：[1]云南省农业科学院农业环境资源研究所,云南昆明650205 [2]国际植物营养研究所成都代表处,四川成都610066 [3]云南农业职业技术学院,云南昆明650031 [4]寻甸县金所农科站,云南寻甸655204

出　　处：《西南农业学报》2012年第5期1761-1764,共4页Southwest China Journal of Agricultural Sciences

基　　金：国际植物营养研究所(IPNI)资助项目"云南持续农业的坡地管理"(NMS-Yunnan200801)

摘　　要：在昆明市寻甸县清水海水源保护区红壤旱坡地进行夏播油菜平衡施肥试验。结果表明,施氮52.5 kg/hm2使油菜籽产量增加29.49%,且随着施氮量的增加而略有增加,但氮肥的农学效率随着施氮量的增加而降低;施磷30.0 kg/hm2使油菜籽产量增加9.83%,但随着施磷量的增加油菜籽产量趋于下降,磷肥的农学效率降低;施钾60.0 kg/hm2使油菜籽产量增加9.30%,且随着施钾量的增加,油菜籽产量趋于增加,钾肥的农学效率降低。A field experiment with a completely randomized block design of balanced fertilization was conducted on summer sowing rape in red soil of upland in protection areas of Qingshuihai Lake water-head in 2010.Results showed that yield of rapeseed was increased by 29.49 % under applying N 52.5 kg/hm2,and it was up slightly and agronomic efficiency of N was down while N rates increasing;rapeseed yield was increased by 9.83 % under applying P2O5 30.0 kg/hm2,and it went to decrease and agronomic efficiency of P2O5 was down while P2O5 rates increasing;yield of rapeseed was increased by 9.30 % under using K2O 60.0 kg/hm2,and it trended to be up and agronomic efficiency of K2O was down while K2O rates increasing.

关 键 词：水源保护区 夏播油菜 平衡施肥 油菜籽产量 

分 类 号：S634.3[农业科学—蔬菜学]