Controlled release of phosphorus fertilizers by small, frequent additions in water solution

被引：11
|
作者：
Nyborg, M [1 ]
Solberg, ED
Pauly, DG
机构：
[1] Univ Alberta, Dept Renewable Resources, Edmonton, AB T6G 2E3, Canada
[2] Alberta Agr, Food & Rural Dev, Agron Ctr, Edmonton, AB T6H 4P2, Canada
来源：
CANADIAN JOURNAL OF SOIL SCIENCE | 1998年 / 78卷 / 02期
关键词：
barley; diammonium phosphate; monoammonium phosphate; P uptake; P yield; release of P;
D O I：
10.4141/S96-098
中图分类号：
S15 [土壤学];
学科分类号：
0903 ; 090301 ;
摘要：
Controlled release of P was investigated with barley plants grown on two soils. Phosphorus fertilizers (monoammonium phosphate [MAP], diammonium phosphate [DAP] and ammonium polyphosphate [APP]) were dissolved in water and were applied full dose at sowing; 1/22 dose every 2nd day and 1/4 dose each 11th day. Uptake of fertilizer P in barley was much greater when the P was applied every 2nd and 11th day compared to only the day of sowing.
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页码：317 / 320
页数：4
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