【摘要】 通过田间试验、田间示范和室内分析，筛选出4号肥为向日葵专用肥的最佳配方。施用4号专用肥极显著地提高了向日葵产量，增加经济收入，并提高氮、磷化肥利用率15．0％和8．6％，还可提高子实的脂肪和蛋白质含量，使单位脂肪和蛋白质产量均有提高。更多还原

【Abstract】 Through field experiment, field demonstration and chemical analysis, we sifted out the fertilizer No .4 to be the best compound fertilizer specially used for sunflower. When the special fertilizer No.4 was applied, the yields and economic incomes of sunflower were increased remarkably, and the utilization ratios of nitrogenous and phoshate chemical fertilizers were increased by 15% and 8. 6% respectively.At the same times, the contents of fat and protein in grain were also increased, and the yields of fat and protein were increased too.更多还原