| 西北荒漠绿洲区紫花苜蓿土壤有效磷丰缺指标与推荐施磷量 |
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| 引用本文： | 孙洪仁,穆尼热·买买提,沙吾列·沙比汗,卜耀军,杨彩林,闫朝,倪兴成,郝小军.西北荒漠绿洲区紫花苜蓿土壤有效磷丰缺指标与推荐施磷量[J].中国草地学报,2021(1). |
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| 作者姓名： | 孙洪仁 穆尼热·买买提 沙吾列·沙比汗 卜耀军 杨彩林 闫朝 倪兴成 郝小军 |
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| 作者单位： | 中国农业大学草业科学与技术学院;新疆畜牧科学院草业研究所;榆林学院生命科学学院;陕西省神木市草原工作站 |
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| 基金项目： | 农业部公益性行业项目“苜蓿高效种植技术研究与示范”(201403048);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)。 |
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| 摘 要： | 采用零散实验数据整合法和养分平衡-地力差减法,开展了西北荒漠绿洲区苜蓿测土施磷系统研究,以期为我国西北荒漠绿洲区紫花苜蓿测土施肥奠定科学基础。结果表明,我国西北荒漠绿洲区苜蓿土壤有效磷第1~7级丰缺指标依次为≥46mg/kg、20~46mg/kg、9~20mg/kg、4~9mg/kg、2~4mg/kg、1~2mg/kg和<1mg/kg;当目标产量为12~27t/hm^2、磷素利用率20%时,第1~7级土壤之推荐施磷量分别为0、36~81kg/hm^2、72~162kg/hm^2、108~243kg/hm^2、144~324kg/hm^2、180~405kg/hm^2和216~486kg/hm^2。
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| 关 键 词： | 紫花苜蓿 测土施肥 土壤有效磷 丰缺指标 施肥量 |
Study on the Plentiful-lack Index of Soil Available Phosphorus Deficiency and Recommended Phosphorus Application Rate for Alfalfa in Desert Oasis Area of Northwest China |
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| SUN Hong-ren,Munire·Maimaiti,Shawulie·Shabihan,BU Yao-jun,YANG Cai-lin,YAN Zhao,NI Xing-cheng,HAO Xiao-jun.Study on the Plentiful-lack Index of Soil Available Phosphorus Deficiency and Recommended Phosphorus Application Rate for Alfalfa in Desert Oasis Area of Northwest China[J].Chinese Journal of Grassland,2021(1). |
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| Authors: | SUN Hong-ren Munire·Maimaiti Shawulie·Shabihan BU Yao-jun YANG Cai-lin YAN Zhao NI Xing-cheng HAO Xiao-jun |
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| Institution: | (College of Grassland Science and Technology,China Agricultural University,Beijing 100193,China;Institute of Grassland Research,Xinjiang Academy of Animal Science,Urumqi 830000,China;College of Life Sciences,Yulin University,Yulin 719000,China;Grassland Workstation of Shenmu City,Shenmu 719300,China) |
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| Abstract: | To lay a theoretical basis for soil testing and fertilizer recommendation of alfalfa in the desert oasis of northwest China,the method of scattered experimental data integration and the method of nutrient balance soil fertility subtraction were used to study the Plentiful-lack index(PLI)of soil available phosphorus and the recommended phosphorus application rate(RPAR)for alfalfa.The results showed that the PLI of alfalfa soil Olsen-P of grades 1 st to 7 th in the desert oasis area of northwest China were≥46mg/kg,20~46mg/kg,9~20mg/kg,4~9mg/kg,2~4mg/kg,1~2mg/kg and<1mg/kg,when the target yield was 12~27t/hm^2 and the phosphorus utilization rate was 20%and,the RPAR of the 1 st to 7 th grade soils were 0,36~81kg/hm^2,72~162kg/hm^2,108~243kg/hm^2,144~324kg/hm^2,180~405kg/hm^2 and 216~486kg/hm^2. |
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| Keywords: | Alfalfa Soil testing and fertilizer recommendation Soil available P Plentiful-lack index Fertilizer application rate |
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