问题解答

• ☞ Prevention and control measures: the early onset of agricultural spraying, "Pioneer V," 1,000 times, the incidence of serious time with his spray 800 times, between 6 to 7 days even spray three times.      Downy mildew, commonly known as "Shuangye." Mainly in the leaves, first have a light green Shui Jinzhuang small lesion and gradually expand into a yellow-green irregular lesion, occurred in a white leaf-like sp. In case of dry weather was dry dun lesion, the lesion serious expansion of merging, all the dead outer leaves, such as low temperature in the two-phase Angiopteris rain event, a serious disease.      Prevention and control measures: agricultural use, "Vanguard V" 800 to 1,000 times or spray evenly with 80 percent five Shuanglu 800 times, 4% alum kill 800 times, 600 times 50% of the storm, 75% of the bacteria per cent Qing 500 times, 21% of the times 800 grams of food bacteria turn of the medication, between 5 to 6 days even spray three times.      Soft known as the "bad swelling on the skin, gourd Lan Cai", Chinese cabbage is a view package heart disease, invasive bacteria from the wound shortening stem damage, resulting in root rot stink. Yan wilt the leaves fell off, resulting in the death of whole-plant.      Prevention and control measures: to promote the use of chemical control of Vanguard 800 V ~ 1000 times, 72% of the agricultural streptomycin, or 1,000 times the new 4000-planting times.
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