摘要
采用3因素5水平二次回归正交组合设计试验,建立了冷地早熟禾种子产量(Y)与播种量(X1)、行距(X2)和施肥量(X3)的回归方程:Y=42.61+5.01X1-7.81X2+7.77X3-2.21X1X2+1.41X1X3-0.41X2X3-4.64X12+6.36X22+8.56X32;并提出西宁地区冷地早熟禾种子生产的优化农艺措施:播种量8kg/hm2,播种行距20~30cm,种肥(磷酸二铵)150~187.5kg/hm2。
Experiment designed as quadric regression orthogonal combination at 3 factors and 5 levels has been conducted. The regression equation on seed yield(Y), sowing rate(X 1), row space(X 2) and fertilizer amount(X 3) for Poa crymo phila Keng seed production has been worked out as following: Y=42.61+5.01X 1-7.81X 2+7.77X 3-2.21X 1X 2+ 1.41X 1X 3 -0.41X 2X 3-4.64X 1 2+6.36X 2 2+8.56X 3 2, Data package for optimal seed production in Xining area is suggested as following: sowing rate 8kg/hm 2, row space 20~30cm, fertilizer application (NH 4HPO 4) 150~187.5kg/hm 2.
出处
《中国草地》
CSCD
1998年第5期35-37,共3页
Grassland of China
基金
青海省科委青海省财政厅资助
关键词
冷地早熟禾
种子生产
栽培措施
Poa crymo phila Keng,\ Seed production,\ Agronomic Techniques