摘要
本文以吉林省中部地区主栽的吉研2号大白菜为例,采用D-饱和最优设计(R206)试验的方法,对种植密度与氮肥施用量两项主要农艺措施进行了系统研究。通过试验的有关数据建立起产量函数的模式,解析了种植密度(x_1)、硝酸铵施肥量(x_2)这两项主要栽培因素对产量的单独效应和互作效应,提出了大白菜种植密度与硝酸铵施用量的最佳配合方案。埯距采用40cm,硝酸铵施用量为28.31kg/mu,产量达10420.24kg/mu。
The growing density of Jiyan-2, a Chinese cabbage, and amount of N-fertilizer applied were studied by means of the D -satuated optimum design (R206) in the present paper. The functional equation of the yield to the growing density and the amount of N - fertilizer applied was set up. The individual and combined effects of growing density and the amount of NH4NO3 applied were discussed. A optimum scheme of growing density and N -fertilizer applying rate for Chinese cabbage was proposed accordingly.
出处
《吉林农业大学学报》
CAS
CSCD
1992年第1期32-37,共6页
Journal of Jilin Agricultural University
关键词
密度
大白菜
栽培
氮肥
施用量
Functional model of yield, growing density, N-applying rate
