【摘 要】
：
丰乐四号是经多年定向选育而成的适合于早春栽培的专用型西瓜新组合。1996－1998年连续3年分别在北京、上海、辽宁等西瓜产区进行大面积示范种植，累计推广面积3333hm’以上，瓜农
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丰乐四号是经多年定向选育而成的适合于早春栽培的专用型西瓜新组合。1996－1998年连续3年分别在北京、上海、辽宁等西瓜产区进行大面积示范种植，累计推广面积3333hm’以上，瓜农普遍认为其品质优、产量高，综合性状优于目前国内同类主栽品种。特征特性：早熟，全生育期89d（
Fengle No. 4 is a multi-year oriented breeding suitable for early spring cultivation of a new type of watermelon combination. 1996-1998 for three consecutive years respectively in Beijing, Shanghai, Liaoning and other watermelon producing areas for large-scale demonstration planting, the cumulative promotion of an area of 3333hm ’or more, melon farmers generally believe that its excellent quality, high yield, comprehensive traits than the current domestic similar main planted Variety. Features: precocious, the whole growth period 89d (
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夏番茄在９－１０月上市，如采用薄膜、遮阳网双层覆盖栽培技术，可改变番茄生长期间高温多雨、果实脱落的弊端，一般亩产可达４０００ｋｇ。 １．培育无病壮苗 品种选用耐高温、避蚜虫、抗病毒病的毛粉８０２，５月
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