Northern cryogenic frost enhances water and fertilizer management

As the early cold air has brought about significant cooling, with good weather in most areas, the night radiation cooling significantly. Following the large area of ​​frost on the 17th, in the morning of the 18th, the province witnessed a greater area of ​​low-temperature frost. On the 19th, the lowest temperature of the province was -0.7°C, and a total of 36 counties and cities issued orange cold warning signals.

It is predicted that there will be two cold air processes in the province in late December, a precipitation process, with less rainfall in most of the ten days, and an average temperature of 1°C higher on the tenth day. Comprehensive evaluation of agricultural meteorological conditions believes that the low-temperature frost that emerged during the ten-year period is beneficial to the promotion of flower bud differentiation in longan and litchi, and is unfavorable to sugarcane and some winter crops. However, due to the early adoption of cold-proof measures in various places, no significant damage was caused.

Weather forecast

Precipitation process: It is expected that in the early days of the year, sunny to cloudy weather will dominate. In the late late period, there was a moderate rainfall event.

Cold air process: 26-27 days (medium), 30-31 days (moderately weak).

Ten days of rainfall: 10-20 mm in the northwest, northeast, 5-15 mm in the middle, southeast, and southwest. Compared with the same period of the year, rainfall was low in most parts of the province.

The temperature in the ten days is 11-13°C in the northwest, 13-15°C in the northeast, 15-16°C in the middle, 15-17°C in the southeast, and 16-17°C in the southwest. Compared with the same period of the year, the average temperature in the ten days is higher by 1°C.

The extreme minimum temperature in the ten days is 3-5°C in the northwest, 4-6°C in the northeast, 7-9°C in the middle and southeast, and 8-10°C in the southwest.

Agricultural production advice

1. There is still cold air impact in the end of the year, and crops in the field should pay attention to maintaining soil moisture, and use the weather warming period to strengthen water and fertilizer management, promote the recovery of crops and increase the cold resistance of crops.

2, dry and dry, we must pay attention to strengthen forest fire monitoring and forest fire prevention work.

(Guangdong Meteorological Bureau Climate and Agrometeorological Center contributing)

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