摘要
采用三因子二次正交旋转组合设计,研究了N、P、K肥配施对空心多茎株型短季棉产量的效应。通过对试验结果进行单因子、二因子互作以及三因子综合效应分析,表明了三因子对产量的影响是K肥>N肥>P肥(影响比例是K肥∶N肥∶P肥=3.16∶2.37∶1),且K肥与N肥之间存在较明显的正互作效应,K肥和N肥应是生产中重点调控的因子;提出了以籽棉产量大于3750kg/hm2,施肥效益大于12000元/hm2为指标的高产高效施肥方案。
Using the 3-factor-2-time revolving design, the effect of the compound fertilization of N,P and K on the yield of top removal planting type of short-dated cotton was studied. By the effect analysis on single factor, 2-factor cooperation and 3-factor synthesis,the effects of N, P and K on the yield follow the order: K>N>P (the proportion is K∶N∶P=3.16∶2.37∶1). And the study also shows that there is an obvious positive interactive effect between K and N, therefore , they should be the main adjusted factors. Finally high yield and concentrated fertilizing measures are put forward, with which the yield of unginned cotton will amount to more than 3 750 kg/hm^2 and the fertilization benefit will amount to 12 000 yuan/hm^2.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2005年第3期374-378,共5页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家"九五"科技攻关项目(96-004-01-04-02)
河北省科技攻关项目(96220915D-02)资助
关键词
空心多茎株型
短季棉
N、P、K肥
产量
效应
top removal planting type
short-dated cotton
N P K fertilizer
yield
effect
