What was the weather like in the past week?
What are the impacts on agricultural production?
What are the weather trends for the future?
What are some recommendations for agricultural production?
Let's take a look at this issue of "Agricultural Gas Direct Train"
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Last week, the temperature in most parts of the mainland was close to the same period of the year or higher, among which the central and western parts of Inner Mongolia, the northwest, North China, the Huanghuai, the western Jianghuai, Jianghan, the northeast and southwest of the southwest region and the northern part of Hunan were 1 to 4 °C higher, and the eastern part of Fujian, northern Guangdong, western Guangxi, southern Guizhou, eastern Yunnan, western Sichuan and other places were 1 to 2 °C lower.
The precipitation in eastern Zhejiang, northern Fujian, western Guangdong, central and northern Guangxi, Hainan, most of Guizhou, southern Chongqing, southern Sichuan, and eastern Yunnan is 25 to 100 mm, and the precipitation in most of the above areas is close to the same period of the year or 3 to 4 times more; Most of the rest of the country has no precipitation or less than 25 mm.
The sunshine hours in Northeast China, North China, Huanghuai, Jianghuai, Jianghan, the eastern part of Northwest China, Jiangnan, the eastern part of South China, and the eastern part of Southwest China are close to the same period of the year or more than 3 to 2 times, and the western part of Northwest China and western Guangxi, western Guizhou, eastern Yunnan, and western Sichuan are less than 3 to 8 percent.
The impact of future weather on agricultural production
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It is expected that in the next 10 days, the hydrothermal conditions in Northeast China and Inner Mongolia will be good, and most of the soil moisture will be suitable, which will be generally conducive to the sowing of spring corn and soybean and the transplanting of one-season rice.
From the 22nd to the 24th, dry and hot winds will occur in the winter wheat areas of southern North China, Huanghuai and Guanzhong in Shaanxi, which will lead to the obstruction of winter wheat filling, and the high temperature and lack of moisture will be conducive to the occurrence and development of wheat aphids.
Precipitation will intensify again in the south. Among them, there was a precipitation process around the 20th to 21st, 23rd to 24th and 26th, with a cumulative precipitation of 60 to 100 mm, 120 to 180 mm in some areas, and more than 250 mm in southeastern Guangxi and southern Guangdong. The precipitation weather is not conducive to early rice tillering control and rapeseed harvesting and drying, which also increases the risk of rapeseed germination and mildew. Areas with high precipitation intensity are prone to wet damage to farmland, and the growth of dryland crops and economic forest fruits will be adversely affected, and it is also easy to cause the occurrence and development of crop diseases and pests.
Farming advice
In the areas in Northeast China that have not yet completed spring sowing, the sowing progress should be accelerated, and the seedlings should be checked and replanted in time in the sown areas. The first-season rice area made full use of the favorable weather to speed up the transplanting progress, and did a good job in water and fertilizer management after planting, so as to promote the return to green and tillering. In the northern winter wheat area, it is necessary to pay close attention to the changes of weather and moisture, do a good job of "one spray and three preventions", and choose the plots with poor moisture to irrigate with small water or sprinkler irrigation in a timely manner in windless weather, so as to avoid flood irrigation, promote full filling of winter wheat, and increase grain weight; Mature areas are harvested and dried in time to ensure that the particles are returned to the warehouse. The middle and lower reaches of the Yangtze River and the southwest region should avoid rainfall periods and harvest ripe winter wheat and rape in a timely manner. In the south of the Yangtze River and South China, the shallow water layer was maintained for the early rice with insufficient seedlings to promote the formation of tillering, and attention should be paid to the early rice with enough seedlings to control tillering. In areas with a lot of precipitation, ditches should be cleared and drained in a timely manner to prevent farmland from being waterlogged. All localities also need to do a good job in the monitoring and prevention of crop diseases and pests.
So what exactly is "hot and dry air"?
Find out
Source: Central Meteorological Observatory Editor: Liu Jia Review: Jiang Hong