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Position: Home > Articles > Preliminary Studies on Relationship between Optimum Diammonium Phosphate Application of Wheat and Soil or Plant Nutrients Journal of Agricultural University of Hebei 1989 (3) 68-74

小麦磷二铵最佳用量及其与土壤植株养分关系的初探

作  者:
薛世川;刘东臣
关键词:
小麦;磷二铵;植株营养
摘  要:
研究结果表明,在高磷条件下,磷二铵的增产效果符合报酬递减率;最高产量点的施肥量在30公斤/亩左右;最佳施用量在一定的土壤及生产条件下因肥料价格/小麦价格的比值而异,该比值在2.6—2.0范围内,最佳施用量为12—15.5公斤/亩.土壤速效磷随磷二铵用量增加而提高;而土壤速效 N,K,Cu 则显著降低;植株体内 N,K,Cu,Zn 含量随磷二铵用量增加而明显增加。
译  名:
Preliminary Studies on Relationship between Optimum Diammonium Phosphate Application of Wheat and Soil or Plant Nutrients
作  者:
Xue Shichuan Liu Dongchen (Dept.of Agron,Hebei Agri.Univ.,Baoding.,China)
关键词:
Wheat;;Diammonium Phosphate;;Plant Nutrient
摘  要:
This paper pointed out the optimum diammonium Phosphate applied amount of wheat plant in fertile soil and also described its relation to soil and plant nutrient. The results indicated that:the phosphate was rich in the soil,the evidence obtained appeared to fit the law of diminishing returns.The applied amount of diatomalum phosphate for maximum yield was approx- Imately 30kg/mu.Under given soil and producing conditions,the optimum amount applied depended on the price ratio(fertilizer/wheat).When the ratio ranging from 2.6 to 2.0,the optimum applied amount of diammonium phosphate was 12-15kg/mu.As the rates of diammonium phosphate increa- sed,the content of soil available phosphate increased,the soil available N.K arid Cu decreased significantly,and the total N,K,Cu and Zn in plant increased significantly.

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