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The suitable sowing date for Chinese cabbage in Beijing is generally from August 2 to 9. Proper planting is an important part of the production of Chinese cabbage and a key step in harvesting harvest. There are many factors to be considered in determining the timely sowing date. In the suitable sowing period, the autumn and winter years should be timely and timely. In the autumn and cool years, the high-yield can be obtained in a timely manner; the varieties with strong disease resistance and long growth period can be used. Appropriate early sowing, varieties with weak disease resistance and short growth period are suitable for late sowing; appropriate early sowing in the outer suburbs, appropriate late sowing in the suburbs; appropriate early sowing in the oysters, and appropriate late sowing in the squatting areas.
In late July, Beijing continued to have hot and humid weather, precipitation was significantly less, soil moisture generally declined, and it had an adverse effect on timely planting of Chinese cabbage. According to the forecast of the Beijing Meteorological Observatory, in the first ten days of August, there were many showers or thunderstorms in Beijing. There were moderate to heavy rains on the 3rd to 4th, and moderate rain on the 7th to 8th. The weather should be planted in time and clear, so avoid the large precipitation to avoid scouring. seed.
According to the prediction of the Climate Center, the average temperature in Beijing in August was 25 to 26 °C, which was higher than normal, and the average precipitation was 130-160 mm. According to this prediction, the caloric conditions and water conditions of the Chinese cabbage in the early stage of fertilization are better, and can be properly broadcasted in the appropriate period.
It is recommended that farmers in the suburbs of Beijing should pay close attention to the fine weather in the early part of August, so that they can be planted in time; after the sowing, the three waters will reduce the temperature and keep the seedlings growing vigorously; eliminate the aphids around the vegetable fields and reduce the source of the disease.
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