|
|||||
|
|
| 钾肥施用量对早稻产量及农艺性状的影响 | |
| 引用本文： | 陈勇,李向辉,黄科延,鲁艳红,汤海涛,廖育林.钾肥施用量对早稻产量及农艺性状的影响[J].作物研究,2011,25(3):205-208. |
| 作者姓名： | 陈勇 李向辉 黄科延 鲁艳红 汤海涛 廖育林 |
| 作者单位： | 1. 长沙县暮云镇农业技术推广站,湖南长沙,410118 2. 长沙县农业科学研究所,湖南长沙,410137 3. 长沙农辉农业科技有限责任公司,湖南长沙,410134;长沙县干杉乡农业技术推广站,湖南长沙,410134 4. 湖南省土壤肥料研究所,长沙,410125 |
| 基金项目： | 国家"十一五"科技支撑计划，国际植物营养研究所(IPNI)合作项目，湖南省农业科学院科技创新项目 |
| 摘 要： | 在田间试验条件下,研究了不同施钾量对水稻产量、农艺性状及经济效益的影响。结果表明,施钾能显著提高稻谷、稻草和总生物产量,且随施钾量的增加而增加;施钾有利于提高水稻株高、有效穗数和千粒重;当施钾量为K2O 0~90 kg/hm2时,净收入随施钾量的提高而提高,而施钾量高于90 kg/hm2时,净收入反而降低。通过拟合钾肥用量和产量的肥效方程,得出当施钾量为89.8 kg/hm2时,可获得最高产量。在施猪粪22 500 kg/hm2的条件下,推荐该地区早稻的钾肥适宜施用量范围为K2O 75~105 kg/hm2。 |
| 关 键 词： | 早稻 钾肥 产量 农艺性状 |
Effects of Potassium Fertilizer Application on Yield and Agronomic Characters in Early Rice |
|
| CHEN Yong,LI Xiang-hui,HUANG Ke-yan,LU Yan-hong,TANG Hai-tao,LIAO Yu-lin.Effects of Potassium Fertilizer Application on Yield and Agronomic Characters in Early Rice[J].Crop Research,2011,25(3):205-208. | |
| Authors: | CHEN Yong LI Xiang-hui HUANG Ke-yan LU Yan-hong TANG Hai-tao LIAO Yu-lin |
| Institution: | CHEN Yong1,LI Xiang-hui2,HUANG Ke-yan3,4,LU Yan-hong5,TANG Hai-tao5,LIAO Yu-lin5(1 Agricultural Technique Extension Station of Muyun County,Changsha,Hunan 410118,China,2 Agricultural Sciences Institute of Changsha County,Hunan 410137,3 Changsha Nonghui Agricultural Science and Technology Company Limited,Hunan 410134,4 Agricultural Technique Extension Station of Gansha County,5 Hunan Soil and Fertilizer Research Institute,Hunan 410125,China) |
| Abstract: | Effects of different amounts of K fertilizer application on rice yield,main agronomic characters and economic benefits in early rice were studied in the field experiment.The test results showed that K application significantly increased rice grain yield,straw yield and total biomass yield,compared with the CKⅠ and CKⅡ.The rice grain yield,straw yield and total biomass yield increased with the increasing dosage of K application.K application increased the rice plant height,effective panicles and 1 000 grain weight.The net income was the highest at the rate of K2O 90 kg/hm2.Below this level,the net income increased with the increasing dosage of K application,but the net income decreased at the rate of K2O 120 kg/hm2.Based on the fertilizer-yield responses the theoretical maximum grain yield was gained with K2O 89.8 kg/hm2.It was suggested that the recommended K application rate for early rice is K2O 75～105 kg/hm2 with 22 500 kg/hm2 pig manure application in this area. |
| Keywords: | Early rice Potassium fertilizer Yield Characters |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |