Since mid-March, due to frequent cold air activities, there has been a continuous low-temperature and rainy weather in Hunan. The average daily temperature is maintained at 8-12 °C, and the minimum temperature of the process drops to 3-5 °C, which has a great impact on early rice planting. Only part of the early rice in Hunan Province was planted with mud.
According to the latest weather forecast of the Hunan Provincial Meteorological Observatory, it is expected that the strong cold air and high-altitude low trough will be affected by the 21st to 23rd. There is an obvious wind, rain (sleet) and strong cooling weather in Hunan Province, and there is a cold wave in the south of Hunan. The process is cooled to 4~6°C, and the wind from north to south is generally increased to 4~5. On the 24th to 27th, it is controlled by ground high pressure. In Hunan Province, the weather is mainly sunny and the temperature rises. In addition, it is affected by high altitude and low trough at the end of the year. There will also be a precipitation weather process in the province.
According to the latest weather forecast results, Hunan Province should carry out large-scale planting in the middle and late March, combined with the current situation of spring ploughing spring sowing, the recommendations for planting and breeding activities are as follows:
1. Tightening time to store water and prepare for farming. In the early rainy weather process, the precipitation process from mid-to-high rainfall occurred in the whole province, which is conducive to water storage and preparation; some areas with insufficient precipitation in northern Hunan should adopt irrigation measures such as water diversion and water lifting to carry out the work of quarrying.
2, soak seeds in a timely manner, when rushing to sow the mud. According to the latest weather forecast, Hunan Province turned from north to south to sunny weather around the 25th. The temperature in the early period is relatively low. It takes about 3 days for soaking seeds and germination. Therefore, it is possible to arrange soaking seeds on the 22nd to 23rd of the "cold tail warm head", and sow the seeds after the warmth on the 25th to 26th.
3. Strengthen the management of Putian insulation. The temperature in the early period of this period is relatively low, and the rainy weather continues. The early rice paddy field that has been sown should be strengthened in heat preservation management. After the rain stop, the film should be ventilated and dehumidified in time. In the middle and late ten days of sowing, the paddy field should be covered with film insulation to prevent the lower temperature in the early stage of warming, affecting the emergence of seedlings, insisting on the weather during the day and releasing the film, and keeping the film in time at night.
4. Do a good job in the management of fertilizer and pest control in Putian. First, we must pay attention to water temperature adjustment according to different weather changes; according to the situation of the seedlings, timely apply "weaning fertilizer", "protecting fat fertilizer" and "sending marry fertilizer" to cultivate strong growth and improve resistance to low temperature in the later period. The second is to strengthen the investigation of pests and diseases in Putian, and find that the seedlings, such as seedlings, cotton rot, and blight, spray pesticides in time.
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