摘要
按不同肥力讨论了寒旱山区马铃薯施用氮磷肥的增产效果,提出了氮磷肥经济最佳施用量:低肥力N5.297kg·亩-1,P2O53.253kg·亩-1,N:p2O5=1:0.61,亩施肥利润38.57元;中肥力N6.680kg·亩-1,P2O53.997kg·亩-1,N:p2O5=1:0.60,亩施肥利润146.13元;高肥力N8.451kg·亩-1,P2O54.093kg·亩-1,N:p:O5=1:0.48,亩施肥利润164.72元。
This paper discusses the effect of N and P fertilizers upon yield increase in potato plants on cold-rainfed hilly farmland and also suggests the rational application of N and P fertilizers in accordance withdifferent land fertility. The optimal application of N and P fertilizer for potatoes should be N 5.297kg/mu and P2O53.253kg/mu with the ratio of N:P2O5=1:0.61 and profit/mu=38.57 Yuan from fertilization for the farm-land with low fertility; and N 6.680kg/mu,P2O53.997kg/mu with the ratio of N:P2O5=1:0.61 for the farmland with medium fertility and profit/mu=146. 13 Yuan; and N8.451k/mu,P2O54.093 kg/mu for the farmland with high fertility and profit/mu=164.72 Yuan.
出处
《干旱地区农业研究》
CSCD
北大核心
1995年第2期73-77,共5页
Agricultural Research in the Arid Areas
关键词
马铃薯
氮
磷
肥效
施用量
寒旱山区
potato
N and P fertilizer
fertilizer effect
the amount of fertilization