首页 | 本学科首页   官方微博 | 高级检索  
     检索      

连续施用控释氮肥对超级水稻产量、氮肥利用率及土壤养分变化的影响
引用本文:李敏,李广涛,叶舒娅,刘枫,袁嫚嫚,郭熙盛.连续施用控释氮肥对超级水稻产量、氮肥利用率及土壤养分变化的影响[J].中国农学通报,2012,28(33):130-134.
作者姓名:李敏  李广涛  叶舒娅  刘枫  袁嫚嫚  郭熙盛
作者单位:1. 安徽省农业科学院土壤肥料研究所,合肥 230031;安徽养分循环与资源环境省级实验室,合肥 230031;安徽农业大学,合肥 230036
2. 国家缓控释肥工程技术研究中心,山东临沭,276700
3. 安徽省农业科学院土壤肥料研究所,合肥 230031;安徽养分循环与资源环境省级实验室,合肥 230031
基金项目:"十二五"国家科技支撑计划"缓控释肥产业化技术集成与示范","十二五"国家科技支撑计划,国家粮食丰产科技工程,安徽省农科院科技创新团队项目
摘    要:为了明确树脂包膜控释氮肥在超级水稻上的应用效果,通过树脂包膜控释氮肥小区定位试验,以常规施肥为对照,分析了控释氮肥不同配比和用量连续施用对水稻产量、氮肥利用率及收获后土壤养分变化的影响。结果表明,水稻产量以CRU 50%+PU 50%处理最高为11200.5 kg/hm2,与CRU 70%+PU 30%无显著差异,但极显著高于其他施氮处理,70%氮肥用量控释氮肥处理效果优于一次施用普通氮肥处理,与分次施用普通氮肥相当。100%氮肥用量控释氮肥配施普通氮肥处理通过增加水稻穗长、总粒数、实粒数和千粒重,达到增产效果。随着氮肥施用量增加,氮肥利用率显著降低,施用控释氮肥各处理显著高于施用普通氮肥处理,其中CRU 42%+PU 28%和CRU 70%氮肥利用率为53.73%和52.06%,显著高于其他处理8.90~29.29个百分点和7.23~27.62个百分点。水稻收获后70%氮肥用量施用控释氮肥土壤养分含量最高。70%氮肥用量的CRU 42%+PU 28%处理达到节本、增效目的,在超级水稻应用效果最好。本试验结果为控释氮肥在超级水稻上合理施用提供参考数据。

关 键 词:正交设计  正交设计  
收稿时间:2012/5/28 0:00:00
修稿时间:2012/7/27 0:00:00

Effect of Super-rice Yield, Apparent N Recovery Rates and Soil Nutrients Change by Long-term Applying Controlled-release Nitrogen
Li Min , Li Guangtao , Ye Shuya , Liu Feng , Yuan Manman , Guo Xisheng.Effect of Super-rice Yield, Apparent N Recovery Rates and Soil Nutrients Change by Long-term Applying Controlled-release Nitrogen[J].Chinese Agricultural Science Bulletin,2012,28(33):130-134.
Authors:Li Min  Li Guangtao  Ye Shuya  Liu Feng  Yuan Manman  Guo Xisheng
Abstract:

The low N use efficiency are not only resource-wasting, but also seriously impact soil, air, water and surrounding environments. This study aimed to clarify the application result of controlled-release nitrogen coated with polyethylene in supper-rice. With conventional nitrogen as control, the effect of super-rice yield, apparent N recovery rates and soil nutrients change long-term applying controlled-release nitrogen were determined through the fixed position experiments of controlled release nitrogen. The results showed that, the CRU 50%+PU 50% of rice yield reached the highest and rice yield reached 11200.5 kg/hm2. There was no significant difference between the CRU 50%+PU 50% and CRU 70%+PU 30%, but they were significantly higher than else nitrogen. The decreasing nitrogen treatment of applying controlled-release nitrogen were superior to common nitrogen as a base fertilizer and equivalent to common nitrogen as top fertilizer. The total content nitrogen of combined application of controlled-release nitrogen and common nitrogen could increase spike length, the number of grain per ear, filled grain number per panicle and 1000-grain weight. Nitrogen recovery of rice controlled-release nitrogen treatments were significantly higher than common nitrogen treatment. Nitrogen recovery of CRU 42%+PU 28% and CRU 70% were 53.73% and 52.06%, significantly over 8.90%-29.29% and 7.23%-27.62%, respectively. After harvest the soil nutrients were the most in 70% content nitrogen of controlled-release nitrogen. CRU 42%+PU 28% had notable effect on decreasing cost and increasing benefit, which provided a theoretical foundation for the application and promotion of controlled-release nitrogen fertilizer in super-rice.

Keywords:

soil nutrient

本文献已被 万方数据 等数据库收录!
点击此处可从《中国农学通报》浏览原始摘要信息
点击此处可从《中国农学通报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号