荞麦土壤有效磷丰缺指标和适宜施磷量建模  

Abundance-deficiency Index of Soil Available Phosphorus and Modeling of Appropriate Phosphorus Fertilizer Application Rates for Buckwheat in China

作　　者：郭炳麟 孙洪仁[1] 王显国[1] 张运龙 王振国 白乙拉图 张桂华 文峰 金晓光 包雪莲 刘伟春 GUO Binglin;SUN Hongren;WANG Xianguo;ZHANG Yunlong;WANG Zhenguo;Baiyilatu;ZHANG Guihua;WEN Feng;JIN Xiaoguang;BAO Xuelian;LIU Weichun(College of Grassland Science and Technology,China Agricultural University,Beijing 100193,China;Tongliao Agricultural and Animal Husbandry Science Research Institute,Tongliao 028015,China;Hure Banner Agricultural Technology Promotion Center,Hure 028200,China)

机构地区：[1]中国农业大学草业科学与技术学院,北京100193 [2]通辽市农牧科学研究所,内蒙古通辽028015 [3]库伦旗农业技术推广中心,内蒙古库伦028200

出　　处：《大麦与谷类科学》2024年第4期18-23,共6页Barley and Cereal Sciences

基　　金：国家现代农业产业技术体系建设项目(CARS-34)。

摘　　要：为建立荞麦测土推荐施磷系统,采用作物土壤养分丰缺指标推荐施肥系统研究新方法,开展了荞麦土壤有效磷丰缺指标与适宜施磷量研究。结果表明,荞麦缺磷处理相对产量与土壤有效磷含量回归方程为y=10.352 lnx+58.085,土壤有效磷第1—7级指标依次为>58、>22~58、>8.5~22、>3.5~8.5、>1.2~3.5、>0.5~1.2、≤0.5 mg/kg。当土壤有效磷丰缺级别1—7级、磷肥利用率15%~35%、目标产量0.90~3.75 t/hm^(2)时,第1—7级土壤的适宜施磷量分别为0、4~38、8~75、12~113、15~150、19~188、23~225 kg/hm^(2);磷肥利用率35%、30%、25%、20%、15%的适宜施磷量范围依次为0~96、0~113、0~135、0~169、0~225 kg/hm^(2);目标产量0.90、1.50、2.25、3.00、3.75 t/hm^(2)的适宜施磷量范围分别为0~54、0~90、0~135、0~180、0~225 kg/hm^(2)。In order to established a recommended P application system based on soil testing in China,a new study method for crop fertilizer recommendation based on abundance-deficiency index(ADI)of soil nutrients was used to study the ADI of soil available P(SAP)and appropriate P application rates(APAR)for buckwheat in China.The results showed that the concentration of SAP and the relative yield of buckwheat without P fertilizer treatment in China was y=10.352 lnx+58.085.The ADI of SAP for buckwheat in China for the 1st to 7th level were>58,>22~58,>8.5~22,>3.5~8.5,>1.2~3.5,>0.5~1.2 and≤0.5 mg/kg,respectively.When the target yield(TY)of buckwheat was 0.9~3.75 t/hm^(2),the P fertilizer use efficiency(PFUE)was 15%~35%,and the SAP abundance-deficiency level(ADL)was from 1st to 7th,the APAR for ADL from 1st to 7th were 0,4~38,8~75,12~113,15~150,19~188 and 23~225 kg/hm^(2),respectively.The APAR for PFUE of 35%,30%,25%,20%and 15%were 0~96,0~113,0~135,0~169 and 0~225 kg/hm^(2),respectively.The APAR for TY of 0.90,1.50,2.25,3.00 and 3.75 t/hm^(2) were 0~54,0~90,0~135,0~180 and 0~225 kg/hm^(2),respectively.

关 键 词：中国 荞麦 测土施肥 有效磷 丰缺指标 施肥量 

分 类 号：S153.6[农业科学—土壤学] S517[农业科学—农业基础科学]