Ningxia's temperature is low, growth is slow, and cold air will be affected by frost.

Affected by the low temperature in the previous period, Ningxia has long been lagging behind. It is expected that due to the influence of cold air, from April 30 to May 2, most areas of Ningxia will have light frost and some areas will have frost. It is disadvantageous to the late growth of alfalfa. It is recommended to pre-fill the water before the cold air strikes, increase the humidity and temperature of the plantation, avoid the freezing of the flowers and leaves, and affect the fruit.

As the main production area of ​​Ningxia, the country has entered the leaf-expansion period from March to April every year. However, the average monthly temperature in Ningxia in March this year was only 0.6 °C, which was 1.7 °C lower than the normal period. In April, the undulating temperature and the occasional visits from the frosty weather made the growth period of Ningxia lag. Compared with previous years, the leaf-expansion period of Ningxia carp has lags behind 7~10 days. In addition to the delay in the leaf-expansion period, the dry climate lacking precipitation in Ningxia this year has also led to an increase in the number of mites. In the past years, only the pesticides that can be controlled by pesticides in the past year have to be repeated twice to suppress.

According to the latest forecast of Ningxia Meteorological Observatory, there is a cold air approaching Ningxia. From 29th to 30th, the whole district will experience a cooling of 6~8°C, and the cooling rate in some areas is even 8~10°C. In the early morning of April 30 to May 2, most areas of Ningxia have light frost, and some areas have frost, which will adversely affect the late growth of alfalfa. Therefore, 枸杞 planting experts suggest that close attention should be paid to recent weather changes. Inject the water early before the cold air strikes to increase the humidity and temperature of the plantation, to avoid the freezing of the flowers and leaves, and to affect the fruit.

The specific forecast is as follows:

On the 29th, most of Ningxia had 5~6 northerly winds, and the gusts reached 8-9. Some areas were accompanied by dusty weather. Sandstorms will also occur in some areas. There are showers in the eastern part of Wuzhong City and the northern part of Shizuishan City. The process is cooled by 6~8 °C, and the temperature drop in local area can reach 8~10 °C.

On the morning of the 30th, there were light frosts in most parts of Guyuan City and parts of Shizuishan, Wuzhong and Zhongwei.

In the early morning of May 1, most of the district had light frost, and some areas had frost;

On the morning of May 2, most of Shizuishan and some areas of Yinchuan, Wuzhong and Zhongwei had light frost.

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