| 川西北丘陵区水稻钾肥效应及推荐用量研究 |
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| 引用本文： | 戴维,侯锡学,杨言富,戴自荣,向世林,龙学凤.川西北丘陵区水稻钾肥效应及推荐用量研究[J].农业科技通讯,2010(2):40-43. |
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| 作者姓名： | 戴维 侯锡学 杨言富 戴自荣 向世林 龙学凤 |
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| 作者单位： | 1. 绵阳市农业科学研究所,四川绵阳,621000
2. 四川省安县土壤肥料站,622650 |
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| 摘 要： | 通过7个田间试验研究川西北丘陵区水稻产区钾肥效应和适宜施用量。结果表明,适量施用钾肥对水稻具有明显的增产增收效果,7个试验施钾比不施钾增产水稻82.6～1630.3kg/hm2,平均增产679.2kg/hm2;增产幅度为1%～21.3%,平均达7.4%;施钾纯利润平均为744.3元/hm2,产投比平均为3.7;钾肥偏生产力和农学效率平均分别为131.1kg/kgK和9.2kg/kgK。根据肥料效应方程,水稻钾肥最佳经济效益用量在15.0～70.9kg/hm2之间,平均为53.4kg/hm2。土壤有效钾含量与水稻钾肥最佳用量之间呈极显著负相关关系,二者间的对数方程为Y=-37.173Ln(X)+226.25(R2=0.7562**)。
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| 关 键 词： | 水稻 钾肥 肥料效应 钾肥推荐用量 |
Response to potassium fertilizer application and effective potassium application for rice in northwest Sichuan hilly area |
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| Authors: | Dai Wei Hou Xixue Yang Yanfu Dai Zirong Xiang Shilin Long Xuefeng |
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| Institution: | 1Mianyang Agricultural Research Institute/a>;Mianyang Sichuan 621000/a>;2Station of Soil and Fertilization of Anxian/a>;Anxian Sichuan 6222600 |
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| Abstract: | 7 filed trials were carried out to study the response to potassium and optimum K application for rice in northwest Sichuan hilly area. The results showed that K application both significantly increased yield and profit. Yield increment ranged from 82.6 to 1630.3 kg/hm2,the average was 679.2 kg/ hm2; The increment ranged from 1% to 21.3%,the average was 7.4%; The average net profit of K application was 744.3Yuan/hm2,and the value cost ratio was 3.7; The average partial factor productivity of applied K and ag... |
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| Keywords: | Rice potassium fertilizer effective potassium Optimum K recommendation rates |
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