1. Variety selection: Early autumn sowing vegetables are hot and rainy, and the late growth stage meets low temperature and drought. Therefore, carrots, radishes, cabbages, beans, and cabbages should be selected for autumn sowing. They should be cultivars with wide adaptability, cold resistance, and high disease resistance. Carrots can be selected from Japanese Kuroda five-inch ginseng, seven-inch ginseng, small top red, whip red; water radish can choose Dahongpao, Lulu No. 1, Lulu No. 3, Lulu No. 6, nine kilograms red; Chinese cabbage Beijing Xin No.1, Beijing Youkang No.3, Lubai No.2, Tianjin Qingmaye, Fengkang 70 can be selected; Bean can be selected from the following varieties: Green Dragon, Nine White, and LaoLaishi.
2, sowing time: "big heat" before and after the start of planting carrots; "early autumn" before and after the cultivation of radish, cabbage. The early sowing of kidney bean would cause the phenomenon of falling and falling, and the sowing of seeds would result in a low yield, and the seeds could be broadcast live between “summer sun†and “early autumnâ€. 3, pay attention to waterlogging prevention: autumn sowing vegetable seedlings prone to rainy weather, so the autumn sowing vegetable seedlings should pay attention to drainage flood control, soil preparation can be used sorghum or high ridge cultivation.
4. Control of pests and diseases: Autumn sowing vegetables are in the peak period of occurrence of diamondback moth, cotton bollworm and brown spot. Pest control can use high-efficiency and low-toxic pollution-free pesticides, such as anti-pollution, green vegetable treasure, and high chlorine horse spray. Disease prevention and control can be used agricultural streptomycin, frost epidemic grams, DuPont Kelu and other mixed spray control, generally 10 days to prevent and control, even prevention 2 to 3 times, 7 to 10 days before harvest to stop medication.
Precautions
Choose suitable cultivars: the temperature of vegetables in the early stage of nursery is high, the difference in water changes is large, and in the late stage of growth, it is in the stage of low temperature and low illumination. Therefore, varieties with wide adaptability, disease resistance, cold resistance and high yield should be selected when selecting varieties.
To prevent the damage caused by high temperature and heavy rain during seedling period: High temperature and heavy rain will inhibit the growth of vegetable seedlings, resulting in frequent occurrence of pests and diseases. In the nursery, application of shade nets, insect nets, can effectively prevent high temperature, heavy rain erosion and pests and diseases.
Chemical Materials,Sodium Benzoate,Sodium Diacetate,Potassium Sorbate
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