| 中国玉米土壤速效钾丰缺指标与适宜施钾量研究 |
| |
| 引用本文： | 孙洪仁,刘江扬,赵雅晴,曾红,原大山.中国玉米土壤速效钾丰缺指标与适宜施钾量研究[J].中国土壤与肥料,2017(5):29-37. |
| |
| 作者姓名： | 孙洪仁 刘江扬 赵雅晴 曾红 原大山 |
| |
| 作者单位： | 中国农业大学草地研究所,北京,100193 |
| |
| 基金项目： | 国家现代农业产业技术体系建设项目 "现代牧草产业技术体系建设"(CARS-35) |
| |
| 摘 要： | 对自20世纪80年代以来我国开展的玉米土壤速效钾丰缺指标与适宜施钾量研究进行了系统总结。结果表明,30年来我国玉米土壤速效钾丰缺指标出现了降低趋势;不同区域玉米土壤速效钾丰缺指标差异很大,缺钾处理相对产量90%的速效钾含量指标变动于75~215 mg/kg之间;我国玉米土壤速效钾丰缺指标研究存在许多空白区域;我国玉米土壤缺钾较为普遍,速效钾丰缺级别集中于级别较高的第2和3级,缺钾处理相对产量大多介于80%~100%之间;土壤养分丰缺指标研究的试验点数不宜过少,各试验点土壤养分含量分布不宜过于集中,丰缺指标高端和低端采用外推数据需谨慎,并应予以注明;适宜施钾量与土壤速效钾丰缺级别线性负相关,与目标产量线性正相关;当钾肥当季利用率为50%、目标产量为10.5 t/hm~2时,玉米土壤速效钾丰缺级别由高到低第1~7级的适宜施钾量分别为K2O 0、44、88、132、176、221和265 kg/hm~2。
|
| 关 键 词： | 中国 玉米 测土施肥 土壤速效钾 丰缺指标 适宜施肥量 |
| 收稿时间： | 2016/11/5 0:00:00 |
| 修稿时间： | 2016/11/27 0:00:00 |
Study on the abundance deficiency index of soil available K and appropriate potassium application rates for corn in China |
| |
| SUN Hong-ren,LIU Jiang-yang,ZHAO Ya-qing,ZENG Hong,YUAN Da-shan.Study on the abundance deficiency index of soil available K and appropriate potassium application rates for corn in China[J].Soil and Fertilizer Sciences in China,2017(5):29-37. |
| |
| Authors: | SUN Hong-ren LIU Jiang-yang ZHAO Ya-qing ZENG Hong YUAN Da-shan |
| |
| Abstract: | In this paper, researches on abundance-deficiency index ( ADI) of soil available K for corn ( SAKFC) and ap-propriate potassium fertilizer application rate ( APFAR) conducted in China since the 1980s were systematically summa-rized. The results showed that the ADI of SAKFC in China had the decreasing trend in 30 years. There were considerable differences in their ADI of SAKFC in different regions, and the ADI of SAKFC for 90% relative yield ( RY) of the com-plete nutrients treatment except potassium ( TCNTEP) ranged between 75~215 mg/kg. Researches on ADI of SAKFC in China had many blank regions. Soil potassium deficiency for corn in China was common, and the abundance-deficiency lev-els of SAKFC focused on the comparatively high level 2 and 3, and the RY of TCNTEP were mostly between 80% ~100%. For research on ADI of soil nutrient, the number of trial sites should not be too little, and the soil nutrient contents of trial sites should not be too centralized, and using extrapolating data for the high-end and low-end of ADI should be careful and indicated. APFAR and the abundance-deficiency level of SAKFC were linear negative correlated. APFAR and the yield goal were linear positive correlated. When the PFUEICS was 50% and the target yield was 10. 5 t/hm2 , the APFAR for the SAKFC abundance-deficiency level 1~7 from high to low were K2O 0, 44, 88, 132, 176, 221 and 265 kg/hm2 , respec-tively. |
| |
| Keywords: | China corn soil testing and fertilizer recommendation soil available K abundance-deficiency index fer-tilizer application rate |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《中国土壤与肥料》浏览原始摘要信息 |
| 点击此处可从《中国土壤与肥料》下载免费的PDF全文 |
|
