草原土壤施用复混肥的研究  

Study on complex mixed fertilizer application in grassland soil

作　　者：李楠[1] 刘淑霞[1] 刘伟[1] 宋健国[1] 

机构地区：[1]吉林农业大学资源与环境学院,吉林长春130118

出　　处：《草业学报》2002年第1期47-50,共4页Acta Prataculturae Sinica

摘　　要：连续 3年在吉林省白城地区前郭、大安两县草场上 ,通过 N、P、Zn三因素五水平最优回归设计试验 ,筛选出羊草高产、经济效益显著的氮、磷、锌肥合理用量及比例 ,然后在长山化肥厂加工成复合粒肥 ,用于大面积草场飞施作业。结果表明 ,以尿素、重过磷酸钙、硫酸锌单质混配的粉肥人工施入 ,适宜的养分用量 N:6 0～ 80 kg/ hm2 ,P2 O5:6 0～ 90 kg/ hm2 ,Zn:3～ 4 kg/ hm2 ,其比例为 1∶ 1∶ 0 .0 6 ,可获得干草 2 2 30～ 2 95 0 kg/ hm2。每 kg复混肥可增干草8～ 13kg。用单质肥料加工成粒的 N、P、Zn三元复合肥 ,飞机作业 ,施入 2 0 0～ 2 5 0 kg/ hm2 ,每 kg复合粒肥增干草10 .4 kg以上 ,纯收益 5～ 5 .5 7元 ,大大提高了工效 。The experiment was conducted on grassland in Qianguo and Daan County of Baicheng region of Jilin province for three years. Through N,P,Zn three factor and five level optimum regression design, the screening of optimum content and rate of N, P, Zn fertilizer with high yield and economical benefit in Lymus chinensis production was carried out, the mixed silt fertilizer was made up at Changshan factory, and the silt mixed fertilizer was applied to large area by plane spreading. The resalts showed that the application contents were N, 6～8 kg/hm 2, P 2O 5, 6~9 kg/hm 2, Zn 0.3～0.4 kg/hm 2, and the optimum rate 8 the nutrients was 1∶1∶0.06. Compared to single silt fertilizer. The mixed silt fertilizer could increase the hay yield and pure income. It is, therefore, a feaxible measure for sophisticated fertilization on grassland.

关 键 词：草原土壤 复混肥 氮 磷 锌 回归设计试验 羊草 

分 类 号：S147.2[农业科学—肥料学]