摘要
以水稻品种常优1号为材料,于2008至2009年在江苏常熟进行了连续2年的水稻最佳养分管理田间试验研究。结果表明:采用最佳养分管理技术,优化养分运筹,增产31%～46%,施氮量为240 kg.hm-2时可获得最高产量9 208 kg.hm-2;高产高效处理可减少肥料投入30%～40%,增产5.5%,氮肥农学效率提高67.8%～98.4%;高效处理减少48.6%氮肥用量,提高氮肥农学效率31.4%。以上结果表明,在太湖地区采用水稻最佳养分管理技术可以大幅减少氮肥施用量,并显著提高氮肥利用率。
The rice field experiment from 2008 to 2009 was conducted to study the best nutrient management practice in Changshu, Jiangsu Province, taking rice cuhivar Changyou 1 as experimental material. The result indicated that optimized nutrient operation increased rice yield by 31%-46% by the best nutrient management practice. The highest yield was 9 208 kg＂ hm^-2 under 240 kg. hm^-2 nitrogen fertilizer application. High yield and high efficiency treatment reduced 30%-40% nitrogenous fertilizer, but rice yield increased 5.5% ,and raised the nitrogen agronomic efficiency by 67.8% -98.4%. High efficiency treatment could cut down 48.6% nitrogenous fertilizer and improve nitrogen agronomic efficiency by 31.4%. Therefore, the adoptation of the best nutrient management practice in Taihu Lake basin could drastically reduce nitrogenous fertilizer application and significantly improve nitrogen efficiency.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
2011年第4期71-76,共6页
Journal of Nanjing Agricultural University
基金
国家公益性行业(农业)科研专项(200803030)
关键词
太湖流域
水稻
最佳养分管理技术
高产高效
Taihu Lake basin
rice
best nutrient management practice
high yield and high efficiency
作者简介
刘彩玲，硕士研究生。
通讯作者：郭世伟，教授，主要从事土壤肥料及植物营养生理研究，E-mail：sguo@njau．edu．cn。
