论文部分内容阅读
1985～1989年在海城市棕壤和草甸土上,应用现代回归设计,设置了94个玉米氮磷肥料田间试验,配出了12个有代表性的肥料效应方程,探讨了土壤类型、土壤肥力水平以及有机肥料用量对肥料效应的影响。编制出两套电算程序,应用计算机计算出在资金和肥源充足和不足两种情况下的玉米最佳施肥方案供农户使用。4年来,应用推荐的配方施肥面积累计达166万亩,增产玉米5.5万吨,增收4300万元。
From 1985 to 1989, on the brown soil and meadow soil of Haicheng City, 94 modern regression models were set up. Field experiments were conducted on 94 maize nitrogen and phosphorus fertilizers, and 12 representative fertilizer effect equations were formulated. Soil types, soil Effect of Fertilizer Level and Organic Fertilizer on Fertilizer Effect. Two sets of computer programs were compiled and computerized to calculate the best maize fertilization program for farmers to use in both adequate and insufficient funds and fertilizers. 4 years, the application of the recommended formula fertilization area totaled 166 mu, an increase of 55,000 tons of corn, an increase of 43 million yuan.