摘要
应用^(32)P 研究磷酸铵对水稻营养效应的影响,结果表明:钙质紫色土施磷酸铵,水稻吸取肥料和土壤中的 P_2O_5量比施过磷酸钙分别提高25.3%和20.0%。磷酸铵中氮、磷比1:0.5比1:1提高磷肥利用率18.0%;提高吸收土壤中的P_2O_523.2%。钙质紫色土与酸性紫色土相比,施磷酸铵后,水稻吸收肥料和土壤中P_2O_5前者分别提高14.3%和13.2%。
The result shows that the amount of P_2O_5 absorbed by rice from thefertilizer when using ammonium phosphate is more 25.3% than ap-lying calcium phosphate in the“purple calcium”soil.When applyingammonium phosphate,the amount of P_2O_5 absorbed from the soil byrice is also 20.0% higher than using calcium phosphte.The efficiencyof fertilizer(in which N:P is 1:0.5)is 18.0% higher than N:P is 1:1.Also the amount of P_2O_5 absorbed from the soil by rice when applyingthe fertilizer(in which N:P is 1:0.5)is 23.2% more than that of 1:1 theP_2O_5 amount absorbed by rice from fertilizer and soil,after applying theammonium phosphate in“calcium purple”soil is more than 14.3% and13.2% respectively in“acidity purple”soil.
出处
《西南农业大学学报（自然科学版）》
CSCD
1989年第1期26-28,共3页
Journal of Southwest Agricultural University
关键词
水稻
营养
示踪法
磷酸盐
氨基
trace methods
phosphate
amion group
nutritve value
paddy
effect.
