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为了研究日光温室生物菌肥的效应,采用二次正交旋转回归设计方法,研究了3种生物菌肥的4种施肥方案对草莓果实糖酸含量的影响。结果表明:4种施肥方案对草莓果实糖酸含量均有影响;浓度适合时,不同的施肥方案交互使用具有相互促进的作用,而浓度较高时,交互使用会产生拮抗作用。该研究以施肥方案为决策变量,以草莓果实糖酸比为目标函数,建立草莓果实糖酸比与其参数因子间的数学模型:Y=7.90183-0.08025X1-0.05442X2-0.01692X3+0.02417X4-0.13173X12+0.20977X22-0.14660X32-0.00910X42+0.25987X1X2+0.06475X1X3+0.05562X1X4-0.02500X2X3-0.01587X2X4+0.03850X3X4;同时确定了提高草莓果实糖酸含量的最佳施肥方案为,EM菌肥液体喷施1.97275~2.02725g/L、绿康微菌肥液体喷施1.941~2.059g/L、A50液体菌肥喷施0.71975~0.78025g/L、A50菌肥粉末土壤施用1.4395~1.5605kg/667m2。
In order to study the effect of bio-fertilizer in sunlight greenhouse, quadratic orthogonal rotation regression method was used to study the effects of four kinds of fertilization programs on the sugar and acid content of strawberry fruit. The results showed that the four kinds of fertilization programs had effects on the sugar and acid content of strawberry fruit. When the concentration was suitable, the interaction of different fertilization programs could promote each other. When the concentration was high, the interaction could have antagonistic effect. In this study, the fertilization program was used as a decision variable, and the ratio of sugar to acid of strawberry fruit was taken as the objective function to establish the mathematical model of strawberry sugar / acid ratio and its parameter factors: Y = 7.90183-0.08025X1-0.05442X2-0.01692X3 + 0.02417X4-0.13173 X12 + 0.20977X22-0.14660X32-0.00910X42 + 0.25987X1X2 + 0.06475X1X3 + 0.05562X1X4-0.02500X2X3-0.01587X2X4 +0.03850X3X4; at the same time, the optimum fertilization scheme for improving sugar and acid content of strawberry fruit was determined as: Applying 1.97275 ~ 2.02725g / L, spraying Lactobacillus plantarum liquid 1.941 ~ 2.059g / L, applying A50 liquid fertilizer to 0.71975 ~ 0.78025g / L, and applying A50 bacterial fertilizer to the soil in an amount of 1.4395 ~ 1.5605kg / 667m2.