缓释肥料对水稻产量和养分吸收的影响  

Effects of Slow-release Fertilizer on Yield and Nutrient Uptake of Rice

作　　者：王颖 姜娟 刘顺国 陶姝宇 

机构地区：[1]辽宁省土壤肥料总站,辽宁沈阳110034

出　　处：《安徽农业科学》2017年第3期123-126,共4页Journal of Anhui Agricultural Sciences

基　　金：财政部农业推广项目

摘　　要：[目的]研究缓释肥料不同掺混比例和常用掺混比例减氮施肥对水稻产量和养分吸收的影响。[方法]以氮肥施用量或缓释氮肥与速效氮肥比例为处理梯度,设计田间小区试验,研究缓释肥料对水稻产量和养分吸收的影响。[结果]等氮量条件下,含有缓释氮素的掺混肥处理明显高于普通复合肥和尿素的常规处理,增产0.46~1.13 t/hm2,增产率达5.97%~13.87%,氮肥利用率提高5.85%~11.83%。[结论]当缓释氮与速效氮掺混比例为30∶70时,增产率、养分吸收量和氮肥利用率均表现最佳。采用30%缓释氮后减氮10%较常规处理仍有明显增产效果,但低于同掺混比例的全氮处理。[ Objective ] To study effects of slow-release fertilizer on yield and nutrient uptake of rice. [ Method ] Field plot test with application levels of nitrogen or the ratio of slow-realse nitrogen and available nitrogen was designed, and effects of slow-release fertilizer on yield and nutrient uptake of rice were studied. [ Result] The results showed that under the condition of equal amount of nitrogen,the treatment of mixed fertilizer with slow-release nitrogen was significantly higher than that of common compound fertilizer and urea,with the yield increase quantity of 0.46 1.13 t/hm^2, the increase rate of 5.97% - 13.87%, nitrogen fertilizer utilization rate increased by 5.85 ～11,83%. [ Conclusion] When the ratio of slow-release nitrogen and available nitrogen was 30 ： 70, yield, nutrient uptake and N use efficiency were all the best. Reducing 10% of nitrogen after 30% slow-release nitrogen still has a significant effect on increasing yield, but lower than the same proportion of the total nitrogen treatment.

关 键 词：水稻 缓释肥料 产量 肥料利用率 

分 类 号：S145.6[农业科学—肥料学]