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蔬菜喷施光呼吸抑制剂亚硫酸氢钠(NaHSO_3),可有效提高光合作用,减少营养消耗,增加物质积累,使蔬菜早熟7～8天,增产10～30％。如有效喷施,应做到“五要”。一要多次喷施:亚硫酸氢钠在蔬菜上主要施用于白菜、萝卜、芹菜、韭菜、番茄、茄子、黄瓜、马铃薯等。每667米~2用量30克,分3次喷施,每次用量分别为5克、10克、15克,相隔7～10天喷一次,药浓度为200微升/升。二要药肥混施:结合病虫防治与亚硫酸氢钠一起叶面喷,其效果更佳。也可以与其他叶面肥(尿素、磷酸二氢钾、磷酸二铁等)配合进行,以节省劳力,降低成本。
Vegetable spraying sodium bisulfite (NaHSO_3), a photorespiration inhibitor, can effectively increase photosynthesis, reduce nutrient consumption and increase material accumulation, thus increasing the yield of vegetables by 7 to 8 days and increasing the yield by 10 to 30%. If effective spraying, should be “five to”. A spray to be repeated: Sodium bisulfite in vegetables mainly applied to cabbage, radish, celery, leek, tomato, eggplant, cucumber, potato and so on. Each 667 m ~ 2 dosage of 30 grams, 3 times spraying, each dosage was 5 grams, 10 grams, 15 grams, spray once every 7 to 10 days, the drug concentration of 200 microliters / liter. Second, to mix fertilizer: combined with pest control and sodium bisulfate spray together, its better. Also with other foliar fertilizer (urea, potassium dihydrogen phosphate, iron phosphate, etc.) with the work in order to save labor and reduce costs.