南安市花生氮磷钾推荐施肥指标研究  

Recommendation for peanut fertilization in Nanan

作　　者：戴树荣 洪彩誌 

机构地区：[1]福建省南安市土壤肥料技术站,福建泉州362300

出　　处：《福建农业学报》2010年第4期422-427,共6页Fujian Journal of Agricultural Sciences

基　　金：国家测土配方施肥项目(2005-2009)

摘　　要：在南安市花生主产区土壤养分条件下,研究氮磷钾对花生的增产效应以及推荐施肥指标,结果表明:氮磷钾增产效果为N>P>K,施肥效益为N>K>P,氮磷钾产投比分别为6.2、3.8和4.0。土壤速效养分含量与相应肥料利用率呈现负相关。土壤碱解氮、有效磷和速效钾低肥力等级临界指标含量分别为<65mg.kg-1、<14.8 mg.kg-1、<36 mg.kg-1;土壤碱解氮、有效磷和速效钾的高肥力等级临界指标分别为>120 mg.kg-1、>52.6 mg.kg-1、>133 mg.kg-1。氮磷钾推荐施肥量随土壤碱解氮、有效磷、速效钾含量的提高而减少,花生平均最高产量施N量为96.3±17.5 kg.hm-2,N∶P2O5∶K2O为1∶0.53∶1.29,经济施N量85.9±19.6 kg.hm-2,N∶P2O5∶K2O为1∶0.51∶1.25。NPK fertilization is important in order to increase the crop yield and income for peanut farmers in Nanan with its existing soil conditions.Effect of fertilizer application on yield were found to be N PK,and the fertilization benefit NKP.The output/input ratio of N,P2O5 and K2O were 6.2,3.8 and 4.0,respectively.There was a negative correlation between the available NPK in soil and the nutrient utilization.The critical indices of low effective phosphorus content of critical index on alkali-hydrolyzable nitrogen,available P and K in soil were 65mg·kg-1,14.8 mg·kg-1 and 36 mg·kg-1,respectively,and those of high were 120 mg·kg-1,52.6 mg·kg-1 and 133 mg·kg-1,respectively.The recommended NPK application rate would be reduced with high available nutrients in soil.Maximum application rate of N for peanut was 96.3 17.5 kg·hm-2 and the ratio of N∶P2O5 ∶K2O was 1∶0.53∶1.29.The economical application rate of N was 85.9 19.6 kg·hm-2 at the N∶P2O5 ∶K2O ratio of 1∶0.51∶1.25 for the peanut farming in Nanan region.

关 键 词：花生 氮磷钾 产量 养分丰缺指标 

分 类 号：S143[农业科学—肥料学]