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成都市秋淡菜和冬季蔬莱,均在夏秋季育苗,其育苗手段和条件,基本上还是60年代的老方法。蔬菜播种后,苗床往往遇上暴雨、高温、强日照,以致发芽少,成苗率低,秧苗素质差,有的还需重播。既增加了苗床比例、种子、肥料、用工等生产费用,又造成了大田长势不均,产量不高不稳,甚至换季菜的播栽期推迟,大大影响了秋淡菜和冬季菜的产量和质量的提高。为了加速推广遮阳网在蔬菜生产上的应用,用遮阳网小棚覆盖花椰菜育苗,以获得明显的经济效益和社会效益。一、材料选用遮阳网可选用江苏省无锡市武进塑料二厂生产
Chengdu autumn mussels and winter vegetables, are in summer and autumn nursery, its breeding methods and conditions, basically the old method of the 1960s. After sowing vegetables, seedbed often encounter heavy rains, high temperature, strong sunshine, resulting in less germination, seedling rate is low, poor quality of seedlings, and some still need replay. Not only increased the proportion of seedbed, seeds, fertilizers, labor and other production costs, but also caused the uneven growth of the field, the output is not high and unstable, and even seasonal seeding delayed, greatly affected the yield of autumn mussels and winter vegetables and Quality improvement. In order to accelerate the application of shading net in vegetable production, cover the cauliflower seedlings with a shading net shed so as to obtain obvious economic and social benefits. First, the choice of material shading net Wujin Plastic Factory in Wuxi City, Jiangsu Province, Wujin optional production