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一、目的与材料方法 本试验在于探讨微量元素锌对西葫芦(Cucurbita pepo L.)生长发育、产量、品质的影响,初步确定西葫芦锌肥的施用技术和数量,为经济合理施用微量元素肥料提供科学依据。试验在山西农业大学蔬菜试验站进行,供试土壤为碳酸盐褐土类型,土壤有机质含量为1.95％,速效钾12.90ppm,速效氮138.62ppm,速效磷38.85ppm,全锌42.22ppm,有效锌1.057ppm,pH值6.80。供试品种为‘早青一代’,锌肥为硫酸锌(ZnSO_4·7H_2O)。基施锌肥,设7.5kg硫酸锌/公顷(Zno.5)、15kg硫酸锌/公顷(Zn_1)、30kg硫酸锌/公顷(Zn_2)、60kg硫酸锌/公顷(Zn~4)和不施锌(对照Zn_0)5个处理,各3次重复,小区面积为10m~2,前期均用小拱棚覆盖,后期露地生产,田间小区按区组进行随机排列。
First, the purpose and method of the material This experiment is to explore the effects of trace element zinc on the growth, yield and quality of cucurbita pepo L. Zinc hydrometallurgical application and quantity are initially determined to provide science for economical and rational application of trace element fertilizers in accordance with. The experiment was conducted at the Vegetable Experiment Station of Shanxi Agricultural University. The tested soil was of the type of carbonate cinnamon soil with an organic matter content of 1.95%, available potassium 12.90 ppm, available nitrogen 138.62 ppm, available phosphorus 38.85 ppm, total zinc 42.22 ppm, 1.057 ppm, pH 6.80. The cultivars tested were “young generation”, zinc fertilizer was zinc sulfate (ZnSO 4 · 7H 2 O). Based on zinc fertilizer, 7.5kg zinc sulfate / ha, 15kg zinc sulfate / ha, 30kg zinc sulfate / ha, 60kg zinc sulfate / ha (Zn ~ 4) (Control Zn_0) 5 treatments, each repeated 3 times, the plot area of 10m ~ 2, the former are covered with small arch sheds, open field production late, field plots by field groups were randomly arranged.