摘要
研究结合辽宁省测土配方施肥工作,于2006年、2007年在盘锦地区布置多点"3414"水稻肥料试验。对产量数据的回归分析,分别建立了各点产量数据与施肥量的三元二次和一元二次效应模型,再采用边际分析法求得最佳施肥量。对两种模型施肥量推荐效果进行比较,可知三元二次函数推荐值偏离实际,应用时必须以一元二次方程为补充,并结合当地生产实际和土测值。最后,综合提出了盘锦地区水稻生产的最佳施肥量:氮肥(N)270～315kghm-2,磷肥(P2O5)75～120kghm-2,钾肥(K2O)0～75kghm-2,此时,可获产量为8250～9750kghm-2。研究认为,在区域施肥效应模型的综合建立中,产量平均值回归法优于回归系数平均法。对于区域性肥料效应模型的拟合方法还有待于进一步研究。
This paper reported the effects of different fertilizer with simulation models for the ＂3414＂ fertilizer experiments of rice,which were conducted from 2006 to 2007 in Panjin City in Liaoning Province,sponsored by the project of soil testing and fertilizer recommendations in Liaoning.The optimal fertilizing amount of rice was studied quantitatively based on border effect analysis.In comparison with one-variable quadratic equation model simulation,the recommended fertilizer amount by three-variable quadratic equation model simulation was deviating from the practice,in the same ＂3414＂ experiment.So that,it is that the one-variable quadratic equation,customary fertilizer application and the contents of soil nutrients must be referenced.The range of N,P,K optimal composite scheme on rice in Panjin City was N,270-315 kg hm-2,P2O5,75-120 kg hm-2,K2O,0-75 kg hm-2.This composite scheme of N,P,K will attain an optimum yield 8250-9750 kg hm-2.This study showed that the method of regional fertilizer models on simulation need to be further investigated.
出处
《土壤通报》
CAS
CSCD
北大核心
2010年第2期373-378,共6页
Chinese Journal of Soil Science
基金
辽宁省"十一五"攻关项目(2006215005)资助
关键词
水稻
施肥
肥料效应函数
推荐施肥
Rice
Fertilization
Fertilizer response function
Fertilizer recommendations
