茶陵县杂交中稻测土配方施肥效应模型研究  

Model Study on Testing Soil for Formulated Fertilization of Hybrid Middle-Rice in Chaling

作　　者：陈平霞 苏美兰 彭铁山 王志平 李艳 

机构地区：[1]茶陵县农业技术推广中心,湖南茶陵412400

出　　处：《湖南农业科学（下半月）》2014年第8期18-20,共3页

基　　金：农业部2013年测土配方施肥补贴项目[农办财(2013)18号]

摘　　要：通过连续6a的田间试验,分析比较了茶陵县杂交中稻的相对产量、相对吸收量与土壤肥力的关系,根据杂交中稻的N、P、K养分相对吸收量划分土壤N、P、K丰缺指标。采用三元二次回归,建立了不同肥力条件下杂交中稻的N、P、K肥料效应模型,依据模型提出了不同肥力水平(目标产量)下杂交中稻的测土配方最佳施肥用量及施肥技术。Correlations of relative yield, relative nutrient absorption with soil fertility were analyzed by 6 years field experiments. The plentiful-lack index of N, P and K for the soil was divided by the relative absorption of N, P and K by hybrid middle-rice. The three-factor orthogonal quadratic regression was used to build fertilizer effect model of hybrid middle-rice in different soil fertility. Based on the model,the optimal fertilizing amount and technology of hybrid middle-rice in Chaling county under different soil fertility or target yield.

关 键 词：测土配方施肥 指标体系 杂交中稻 茶陵 

分 类 号：S511.32[农业科学—作物学]