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采用基质培养研究氮素形态不同配比对黄瓜生长及性别分化的影响,结果表明用纯NO3--N营养液处理,黄瓜植株营养生长旺盛,当NH4+-N占25％和50％时,黄瓜的生殖生长明显促进,表现为比纯NO3--N处理第一雌花低0.4、0.6节,雌花率增加了23.9％、31.0％,单株产量增加了35.3％、28.7％。叶片和果实中矿物元素钾增加了0.02％～1.41％,铁增加了11～124,ug/g DW,锌增加了37.6～47.0μg/g DW,镁、锰、铜差异不大。黄瓜在不同生育期对氮素形态的敏感性有差异,幼苗期比生长旺盛期不敏感。
The effects of different nitrogen forms on the growth and sex differentiation of cucumber were studied by substrate culture. The results showed that the cucumber plants grew vigorously with pure NO3 - N nutrition solution. When NH4 + -N accounted for 25% and 50%, cucumber The reproductive growth rate of the first female flower was 0.4, 0.6 lower than that of the first female flower treated with pure NO3 - N, the female flower rate increased by 23.9% and 31.0%, and the single plant yield increased by 35.3% and 28.7% respectively. Mineral elemental K in leaves and fruits increased by 0.02% ~ 1.41%, iron increased by 11 ~ 124, ug / g DW, zinc increased by 37.6 ~ 47.0μg / g DW, while magnesium, manganese and copper showed little difference. Cucumber in different growth stages of the sensitivity of nitrogen forms are different, seedling stage than the vigorous growth is not sensitive.