Abstract:

In order to study the effect of water-holding agent on vegetable in greenhouse with fertilizers, the author made the experiment of cucumber ‘Xintai mici’ in greenhouse with different water-holding agent and nitrogen amount, the effects of water-holding agent and nitrogen amount on the growth, yield, quality and root growth were studied. The results showed that under the condition of water-holding agent 45.0 kg/hm2 and reduced nitrogen 20%, yield of cucumber was highest, which was 8.25% higher than the treatment with no water-holding agent and custom fertilizer, and root-shoot ratio was 0.018 higher than the treatment with no water-holding agent and custom fertilizer; soluble sugar content, VC content and soluble protein were highest, which were respectively 8.69%, 7.47% and 9.80% higher than the treatment with no water-holding agent and custom fertilizer, with significant difference. In greenhouse cucumber production, using proper amount of water-holding agent and reducing fertilizers can effectively improve the present situation of overcommitting nitrogen, and increase yield and quality of cucumber.