【摘要】 采用五因素二次正交旋转回归组合设计,对莆大麦4号的五项栽培因素每因素5个水平进行试验,建立相应的数学模型。从所得的数学模型,解析出了因素的主次作用,并探讨了因素的互作效应。通过试验,明确了大麦高产的最佳栽培措施组合是:播种期11/8—11/11,播种量6.26—6.69公斤/亩,尿素21.24—22.40公斤/亩,过磷酸钙24.45—26.10公斤/亩,氯化钾12.30—12.95公斤/亩,亩产可望达250～300公斤,从而为大麦指标化高产栽培提供了科学依据。更多还原

【Abstract】 Orthogonal-gyrating design for five factors was applied in this study. The seeding time, sowing norm, nitrogenous fertilizer, phosphate fertilizer and potash fertilizer were used as variables with five levels per factor. The field trials were conducted at the Experimental station of putian Institute of Agricultural Science in 1987-1988. The result showed that the effect of seeding time on yield was most remarkable, followed potash fertilizer and sowing norm. An appropriate technical project of cnltivation for producing 250-300kg/mu was composted of following agricultural practies, such as sowing time11/8-11/11, sowing norm 5.86-7.10 kg/mu, carbamide 21.24-27.54 kg/mu, calcium superphate 23.5-29.0kg/mu and potassium chbo ride 10.83-13.28 kg/mu.更多还原