蚕豆青秸翻压对玉米产量与土壤养分利用的影响  被引量:10

Effects of Horse Bean Straw on Maize Yield and Utilization of Soil Nutrients

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作  者:张钦 陈正刚 崔宏浩 朱青[4] 宋启堃 胡萍 宋兴香 

机构地区:[1]贵州省土壤肥料研究所 [2]贵州省农业资源与环境研究所 [3]农业部贵州耕地保育与农业环境科学观测试验站,贵州贵阳550006 [4]贵州省农业科学院,贵州贵阳550006 [5]贵州省贵定县洛河北乡农业技术推广站,贵州贵定551305 [6]贵州省平坝县马场镇农业技术中心,贵州平坝561100

出  处:《西南农业学报》2015年第2期632-636,共5页Southwest China Journal of Agricultural Sciences

基  金:公益性行业(农业)科研专项经费(201103005);国家农作物种质资源平台运行服务项目;作物种质资源保护和利用项目;贵州省国际科技合作计划[黔科合外G字(2010)7035];贵州省创新能力建设项目[黔科合院所创能(2011)4002];中央补助地方科技基础条件专项基金[黔科条中补地(2012)4003]

摘  要:为探索利用蚕豆青秸提高玉米养分利用效益的最佳秸秆翻压量,采用田间试验研究蚕豆青秸作绿肥翻压对土壤养分、化肥利用率、农学效益和玉米产量的影响,探索最佳蚕豆秸秆翻压量。结果表明:蚕豆秸秆翻压量与玉米籽粒产量呈显著一元二次线性关系,回归方程为y=-3.0138x2+98.232x+8149.5,相关系数r2=0.9035。与常规施肥处理相比,玉米籽粒产量增加17.14%-21.94%,氮肥利用率提高9.5%-10.9%,P2O5利用率提高6.5%-9.2%,K2O利用率提高4.7%-16.1%,农学效益提高118.61%-143.70%;3年后的土壤有机质含量增加5.24-7.86 g/kg,土壤碱解氮含量增加6%-19.33%,土壤速效磷(P)含量增加6.8%-23.81%,速效钾(K)含量增加4.57%-10%。蚕豆秸秆翻压量15 000-22 500 kg/hm2最佳,可以减少20%的化肥施用。A field experiment was conducted to study the effects of different amount of horse bean straw on soil nutrients,utilization rate,agronomy efficiency and yield of maize. Results: The amount of horse bean straw and maize grain yield was of significant quadratic linear relationship. The regressive equation and coefficient of correlation were y =-3. 0138x2+ 98. 232 x + 8149. 5,r2= 0. 9035 respectively.Comparing with the conventional fertilizer treatment,the corn yield were increased by 17. 14 %-21. 94 % and the utilization rate of N,P2O5 and K2O were improved by 9. 5 %-10. 9 %,6. 5-9. 2 % and 4. 7 %-16. 1 %,respectively and the agronomy efficiency were increased by 118. 61 %-143. 70 %. Three years later the soil organic matter content was increased by 5. 24-7. 86 g / kg,available nitrogen was increased by 6 %-19. 33 %,available phosphorus was increased by 6. 8 %-23. 81 % and available potassium was increased by 4.57 %-10 %. The optimum amount of horse bean straw was 15 000-22 500 kg / hm2 and the chemical fertilize could be reduced by 20 %.

关 键 词:蚕豆 养分利用 秸秆翻压 玉米 

分 类 号:S142[农业科学—肥料学]

 

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