摘要
在青海省高海拔农业区,以当地主要种植的白菜型油菜作为试验对象,进行增施不同用量钾肥的大田试验,研究其对油菜产量的影响及肥料效应。结果表明:在配施氮、磷肥基础上,增施钾肥30～120 kg/hm2,油菜产量较不施钾肥的对照增加11.4%～27.5%;由肥料效应方程得出,在当地生产条件下,最佳施钾量为131.87 kg/hm2,经济合理施钾量为126.17 kg/hm2。
Brassica rapa was selected as research object to study the effect of fertilizer application rate in high altitude zone of Qinghai Province. The results indicated that when using combined fertilizer of nitrogen, phosphorus and 30-120 kg/hm^2 potash, Brassica rapa yield increased by 11.4 % -27.5 %, compared with no potash fertilizer treatment. According to the equation of fertilizer effect, the optimum and economical application rates of potash fertilizer were 131.87 and 126.17 kg per hectare, respectively.
出处
《安徽农业科学》
CAS
北大核心
2007年第5期1419-1419,1422,共2页
Journal of Anhui Agricultural Sciences
关键词
白菜型油菜
钾肥
肥效方程
Brassica rapa
Potash fertilizer
Equation of fertilizer effect
