江西农业学报2024，Vol.36Issue(9)：26-34,9.DOI:10.19386/j.cnki.jxnyxb.2024.09.004
秸秆还田配施磷肥对旱地小麦土壤养分和磷素利用率的影响
Effect of Straw Returning with Phosphate Fertilizer on Soil Nutrient and Phosphate Utilization Rate in Dryland Wheat
摘要
Abstract
Luohan 22 was used as the experimental material,and a split-plot experimental design was employed.The main plots were divided into two treatments:no straw return(S0)and straw return(S1),while the sub-plots received P0～P4 treament(phosphorus application of 0,75.0,112.5,150.0,187.5 kg/hm2,respectively).Soil physicochemical indexes and phosphorus utilization efficiency of wheat at different growth stages were measured.The effects of straw returning and phosphorus application on soil nutrients and phosphorus uptake and utilization of wheat were analyzed.The results showed that:(1)The content of total nitrogen,total phosphorus,total potassium,alkali-nitrogen,available phosphorus and available potassium in the soil generally decreased gradually as the wheat growth stage progressed,with the highest levels during the jointing period and the lowest during the maturity period.(2)Under the same phosphorus application level,the S1 treatment was generally higher than the S0 treatment,with increases in total nitrogen,total phosphorus,total potassium,alkali-nitrogen,available phosphorus,and available potassium of 1.99%,8.08%,1.74%,4.74%,7.38%,and 5.73%respectively.(3)With the same phosphorus application level,straw return increased the agronomic phosphorus use efficiency,phosphorus recovery rate,phosphorus partial factor productivity,and phosphorus absorption efficiency compared to no straw return,with increases of 12.09%,82.68%,6.11%,and 16.72%respectively.(4)Under the same straw return treatment,agronomic phosphorus use efficiency and apparent recovery rate increased first and then decreased with the increase of phosphorus application level,reaching a maximum at the P2 treatment level(112.5 kg/hm2).Phosphorus partial factor productivity and absorption efficiency decreased with the increase of phosphorus application level,and the interaction between straw return and phosphorus fertilization significantly affected agronomic phosphorus use efficiency,apparent recovery rate and absorption efficiency.关键词
旱地小麦/秸秆还田/施磷量/土壤养分/磷肥利用效率/产量Key words
Dryland wheat/Straw returning/Phosphorus application rate/Soil nutrient/Phosphorus utilization efficiency/Yield分类
农业科技引用本文复制引用
乔唱唱,张冬霞,沈思涵,马嵩科,张静,张俊豪,柴雪茹,王贺正..秸秆还田配施磷肥对旱地小麦土壤养分和磷素利用率的影响[J].江西农业学报,2024,36(9):26-34,9.基金项目
河南省科技攻关项目(212102110309). （212102110309）
