不同施肥水平对稻田免耕黑麦草生长及产量的影响  

Effects of Different Application Levels on Growth and Grass Yield of Ryegrass Planted in Rice Field with No-tillage

作　　者：陈志祯 黄河斋 周泽英 何胜礼 薛万珍 陈克庆 罗国琼 

机构地区：[1]贵州省罗甸县畜牧兽医局,贵州罗甸550100 [2]贵州省黔南州草地站,贵州都匀558200

出　　处：《贵州农业科学》2011年第4期68-70,共3页Guizhou Agricultural Sciences

基　　金：黔南州科技局项目"冬闲田牧草免耕种植技术研究"

摘　　要：为探讨平衡施肥对稻田免耕黑麦草产草量的影响,找到最佳的施肥组合和施肥比例,采用罗甸县农户普遍使用的尿素和复合肥进行追肥试验。结果表明:单施复合肥(N∶P∶K=10%∶7%∶8%)组比单施尿素组产草量高,施肥成本是单施尿素组的60%,净收益是单施尿素组的5.4倍;产草量和净收益呈尿素与复合肥混施组均比单施尿素组、复合肥组高,当尿素与复合肥混施比例为1∶2时,其产草量、净收益均达到最佳值,投入产出比为1∶2.23。因此,免耕黑麦草田间施肥应采用尿素与复合肥混施,混施比例为1∶2,尽量避免单施尿素。The different application level was tested in ryegrass planted in the rice field with no-tillage to study the effect of balanced application on ryegrass yield and the optimum application combination and proportion. The results showed that the grass yield of ryegrass fertilized with compound fertilizer was the highest among all treatments and its fertilizing cost and net income was 60% and 5.4 times of the ryegrass treatment fertilized with urea, the grass yield and net income of the ryegrass treatment fertilized with urea and compound fertilizer was higher than the treatments fertilized with urea or compound fertilizer, and the grass yield and net income of the treatment fertilized with urea and compound fertilizer （1 ： 2） reached the optimum value and its input-output ratio was 1 ： 2.23.

关 键 词：施肥水平 稻田 免耕 黑麦草 产草量 

分 类 号：S157.41[农业科学—土壤学]