In the first half of March, there was no precipitation in most parts of Shanxi Province. In the middle of March, it was affected by two cold air. There were two precipitation processes in Shanxi Province, which were on 13-15 and 19-21 respectively. From 13 to 15 days, the precipitation in the province is between 0.0 and 6.8mm, mainly distributed in the north central region. The precipitation is mostly below 5mm, which has little effect on improving soil moisture. There is basically no precipitation in the southern wheat area. There is a mild to moderate drought in the part of Yuncheng. From 19 to 21, the precipitation in the province was between 0.0 and 14.9 mm, mainly distributed in the central part and most of the south. The precipitation in the southern part of Linyi, Jincheng and Yuncheng exceeded 5 mm, and the precipitation in some areas exceeded 10 mm, which could be effectively supplemented. The surface soil moisture, part of Yuncheng and part of Linyi was effectively alleviated.
As of the end of March, except for the winter wheat in the west of Changzhi and the eastern mountainous areas of Linyi, the winter wheat has not returned to green, and most of the other winter wheat has returned to green and entered the growing season. The two precipitation processes in mid-March supplemented the soil surface water to a certain extent, and most of the bottom rafts were suitable, which is beneficial to the growth of winter wheat which is currently in the rejuvenation period. At the same time, the cold resistance of wheat in the rejuvenation period is still relatively strong. The cooling has no obvious adverse effects on its growth and development; however, there are more windy weather in early spring, and the soil surface mites decrease rapidly. Some areas may still have different degrees of spring drought, which may bring certain adverse effects on the growth of wheat in the middle and late stages.
The two major cooling processes that occurred in mid-March have had a certain adverse impact on facility agriculture management. Windy weather tends to overturn the insulation curtain, which may cause damage to the greenhouse greenhouse film; greenhouse crops may suffer from freezing damage in areas with large temperature drop; wind and sand weather may cause the transmittance of greenhouse film to decrease, which is unfavorable for photosynthesis of crops in the greenhouse.
According to the forecast of the Shanxi Provincial Meteorological Observatory: there is basically no precipitation weather in late March, and the province is dominated by fine weather. At the beginning of the first ten days, there was a small temperature drop, and the temperature rose sharply in the middle and late ten days. On March 24th, the province was sunny, the temperature began to rise significantly to 28th; from March 25th to 27th, the province was cloudy and cloudy; from March 27th to March 28th, the province was cloudy and cloudy. There are 4 to 5 northwest winds; there is also a weak cold air at the end of the year, and the province has 5 to 6 northwest winds. In the next few days, there will be no precipitation in our province. The drought in some areas where drought is first exposed may further spread and spread. It is not good for the growth of local winter wheat to return to green. At the same time, the wind and sand weather still have some adverse effects on facility agricultural production.
Agricultural Production Proposal
With the gradual recovery of temperature, winter wheat in Shanxi Province has entered a period of vigorous growth, and some wheat in the south will enter the jointing stage. The demand for water will increase rapidly. All localities should pay close attention to the changes in weather and public opinion, manage the management of wheat fields, and conduct scientific research according to local conditions. Watering and fertilizing to promote the differentiation of wheat ears. Spring is a period of various diseases, pests and weeds. The rejuvenation and jointing stage is a key period for the prevention and control of wheat diseases, insects and weeds. It is necessary to timely weed and weed control and drug control. The dry areas should focus on the control of drought-fighting pests such as wheat aphid and wheat spider. The temperature in spring is still unstable, and there are many windy weathers. Facilities agriculture must continue to do wind and warmth. The spring sowing area should be based on drought resistance and do a good job in spring ploughing.
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