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在黄淮海平原盐渍土地区设置二次回归正交组合设计田间试验.结果表明,硼锌铁肥的浓度配比与冬小麦、夏玉米的产量具有一定的复相关关系.(r=0.8648 r=0.9152).在适宜的浓度配比范围内,喷施硼、锌、铁混合肥可使农作物的叶面积、叶绿素及净光合率得到提高,作物根系对土壤中氮、磷养分的吸收和利用得到改善,对两种作物的产量构成因素有明显的促进作用.
In the Huang-Huai-Hai Plain saline soil area, quadratic regression orthogonal design field experiment was set up.The results showed that there was a certain correlation between the concentration ratio of boron, zinc and iron fertilizer and the yield of winter wheat and summer maize (r = 0.8648 r = 0.9152) .In the proper concentration range, spraying the compound fertilizer of boron, zinc and iron could increase the leaf area, chlorophyll and net photosynthetic rate of crops, the absorption and utilization of crop root to the nitrogen and phosphorus in the soil Improve the yield components of the two crops have a significant role in promoting.