At present, the summer harvesting and summer planting work is coming to an end.
The Central Meteorological Observatory predicts that the main rain belt will rise in a step-like manner to the north in the next week, and there will still be high temperature weather in Huanghuai and other places in North China.
How does this affect agricultural production?
What are the general meteorological conditions during the subsequent "Three Summers" production?
Li Sen, a senior engineer at the research level of the National Meteorological Center, explained this.
1 Preliminary situation
Rainfall and high temperature are entrenched in the north and south respectively
bad for agricultural production
Recently, the Central Meteorological Observatory has issued several high temperature and heavy rain warnings.
Since June 15, a wide range of sustained high temperature weather has occurred in Henan, Shandong, northern Anhui, central and northern Jiangsu, Shanxi, southern Hebei, and southern Shaanxi.
In Inner Mongolia, Xinjiang, Gansu, Ningxia, Shandong, Shanxi, Jiangsu and other places, the daily maximum temperature of 26 national-level meteorological stations exceeded the local historical extreme value in June, and the high temperature in Henan was particularly prominent.
On the 16th, the daily maximum temperature of 59 national meteorological stations in Henan Province reached or exceeded 40°C, of which 11 stations exceeded 41°C.
Continued high temperature and low rainfall lead to deviation of soil moisture in northern summer sowing areas such as North China and Huanghuai, and continued or developing drought conditions in Henan and other places have a certain adverse impact on the timely sowing and seedling growth of summer corn and soybean.
Since June, there have been multiple rounds of heavy rainfall in many places in the south, and some areas have experienced extreme heavy rainfall that exceeds the historical extreme, which has adversely affected agricultural production.
Continued heavy rainfall and lack of sunshine are unfavorable for the growth and development of rice, corn, cotton, open-field vegetables and economic forest fruits, and the growth process of early rice has been delayed; local low-lying farmland, vegetable fields, orchards, etc. have been flooded, and agricultural facilities and aquaculture have been damaged; A suitable temperature and high humidity environment is conducive to the occurrence and development of pests and diseases.
2 Future predictions
Weather conditions are generally good during the summer harvest
According to the dispatch of the Ministry of Agriculture and Rural Affairs, as of June 21, the large-scale machine harvest of wheat in the main summer grain producing areas has basically ended, and a bumper wheat harvest is a foregone conclusion. Nearly 90% of the national summer crops (excluding double-season late rice) are affected by the local drought in Huanghuaihai. , the progress is slightly slower than the same period last year.
According to Li Sen, during the summer harvest, the weather in the wheat harvesting area was sunny and good, and there was no continuous precipitation on a large scale, which was very beneficial to the ripening and drying of the wheat. The wheat harvest progressed quickly and the quality was high.
However, during the summer planting period, the rain is late and the moisture content is poor, which is not conducive to the timely broadcast of seedlings in summer.
In order to provide the "three summers" meteorological service, the Central Meteorological Observatory releases a special report on the meteorological service of summer harvest and summer seeds every Tuesday and Friday, and distributes objective products of grid points every day. Remote sensing monitors the ripening and harvesting information of winter wheat to improve the level of refinement of services; local meteorological departments widely release service and early warning information, and do a good job in the interpretation and popularization of the "three summers" weather.
For the first time, the China Meteorological Administration and the Ministry of Agriculture and Rural Affairs jointly issued an agrometeorological disaster risk warning to prevent the adverse effects of hot and dry winds, droughts and other disasters.
3 Defense Recommendations
Subsequent precipitation in the north is conducive to summer sowing
The South needs to prevent waterlogging
The Central Meteorological Observatory predicts that from June 26 to 29, the rain belts are mainly located in the Northeast, North China, Huanghuai, Jianghuai, and the eastern part of the Southwest.
From the 25th to the 27th, the meteorological arid regions such as Henan, central and western Shandong, northern Jiangsu and Anhui, northern Hubei, eastern Gansu, and Ningxia will have relatively obvious rainfall processes successively, which is more beneficial to alleviate the local meteorological drought.
In addition, on the 25th, high-temperature weather continued in southern Shanxi, central and southern Hebei, Henan, Shandong, and northern Anhui; intermittent high-temperature weather will occur in parts of eastern Jiangnan and eastern South China.
Li Sen analyzed that the precipitation process in the north will effectively improve soil moisture, which is very beneficial to the growth of summer seedlings and spring crops.
All localities should seize favorable opportunities to speed up sowing, and pay attention to checking seedlings and replanting in areas that have been sown.
The rainy weather in the south tends to weaken, which is conducive to the growth and development of local crops. It is necessary to do a good job in clearing and draining ditches, applying fertilizers and applying pesticides, and preventing and controlling diseases and insect pests; Prevent premature aging.
Produced by Propaganda Center of China Meteorological Administration (China Meteorological News Agency)
Author: Zhang Minglu
Editor: Wenge Wu Tong Jia Jingxi
Review: Ren Ke Duan Haoshu