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在上海浦东新区唐镇农业示范基地3年西瓜重茬的5年棚内进行了西瓜氮肥减量与盐渍化等的相关试验,以研究对西瓜产量、品质等的影响。试验表明在一定的肥力基础上,增施有机肥,氮肥减量是可行的,一次施足基肥,膨果期不再施肥,以水吊肥也是可行的。氮肥减量处理区西瓜最终在单株结瓜数、单瓜重、每公顷产量及中心糖度各指标上,均好于常规施肥处理区,表明氮肥用量可明显减下来。
Watermelon nitrogen reduction and salinization were carried out in a 5-year greenhouse with 3 consecutive years of watermelon cropping in Tangzhen Agricultural Demonstration Base in Pudong New Area, Shanghai to study the effects on yield and quality of watermelon. Experiments show that on the basis of a certain amount of fertilizers, organic fertilizers are applied to reduce the amount of nitrogen fertilizers. It is feasible to apply enough basal fertilizer at one time and no fertilizers during the expulsive period. Nitrogen fertilizer reduction zone watermelon finally in the number of single plant melon, single melon weight, yield per hectare and the center of each index of sugar content, are better than the conventional fertilization treatment area, indicating that the amount of nitrogen can be significantly reduced.