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.
出处
《西南农业学报》
CSCD
北大核心
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)
关键词
水源保护区
夏播油菜
平衡施肥
油菜籽产量
Protection areas of water-head
Summer sowing rape
Balanced fertilization
Yield of rapeseed
