摘要
为保证土壤肥力平衡,应用投入产出关系对青贮玉米种植用地土壤肥力平衡进行研究,通过单位面积青贮玉米中氮、磷、钾产出量,结合土壤对相应肥料的淋溶损失,提出青贮玉米在乳熟后期至腊熟期氮、磷、钾的合理施肥比例为1∶0.273∶0.845。
The experiment of soil fertility balance for silage corn production was carried out by using the input-output relationship to ensure the soil fertility balance.The paper combined the output of nitrogen(N),phosphorous(P),and potassium(K) per unit area,with the leaching loss of fertilizer nutrients in soil,the reasonable of N,Pand K fertilization ratio 1∶0.273∶0.845 was proposed in late milk stage to wax ripeness for silage corn production.
出处
《贵州农业科学》
CAS
北大核心
2010年第2期102-103,共2页
Guizhou Agricultural Sciences
基金
贵州省科技攻关项目"奶牛高效关键饲养技术及营养调控研究与示范"[黔科合NY字(2007)3008]
贵阳市科技攻关项目"提高和改善原料牛奶品质的营养调控及高效关键饲养技术研究与示范"[(2007)筑科农字第64]
关键词
青贮玉米
土壤肥力平衡
施肥比例
silage corn
soil fertility balance
fertilization ratio