Guangdong has 4 cold air visits in January, and winter crops must be applied to base fertilizer.

The cold wave weather process in Guangdong in the early period has a great impact on winter crops in the central and northern regions. Millions of acres of crops are affected, and winter vegetables and fruits with poor cold tolerance are more seriously affected. In the second half of the year, the low temperature frost (ice) freezing process has little effect due to the short duration. In addition, the cold air process in the middle and late December brought significant precipitation, the dry farmland was effectively moisturized, and the early meteorological drought was relieved. At the same time, the cold wave process was beneficial to the flower bud differentiation of Longan longan and the inhibition of winter shoot growth.

Guangdong Meteorological Observatory estimates that compared with the same period of the previous year, precipitation in parts of northern Guangdong is more than 1 to 20% higher than normal in January 2011. The precipitation in most other areas is 1 to 20% less than normal. Less than 20%; the monthly average temperature is 0-1.0 °C lower than normal, and the lowest temperature around the country is about 0.5 °C lower than normal. There are mainly 4 cold air effects in Guangdong, which generally appear in the first half of the first half (strong), mid-mid (medium-strong), late-stage (medium-strong), late-late to early February (strong). In the first half of January and in the second half of Guangdong Province, there may be 3 to 7 days of frost (ice) freezing weather, and the possibility of a provincial cold wave in the month is small.

It is recommended to strengthen the field management of winter crops, apply base fertilizer in time, early tube management, promote the growth of winter crops; strengthen winter orchard management. Litchi and longan pay attention to the work of promoting flowers; do the cold work of winter crops, fruit trees, animal husbandry and aquatic products.

Cold air activities are frequent, and all localities must implement cold-proof measures, and pay attention to the cold-proof work of winter crops, fruit trees, animal husbandry and aquatic products.