Evaluation of agrometeorological conditions in July 2010 and pre-assessment in August

In July , the temperature in most parts of the country was high. The southeastern part of the Northeast, the southeastern part of the northwest, the western part of the Yellow River and the Huaihe River, the southwestern part of the Yangtze River, the Jianghan, the northern part of the Yangtze River, the southwestern part of the southwest, and the western and southern parts of Yunnan have more precipitation. In the middle and upper reaches of the northeastern region, the hydrothermal conditions are more suitable, and the crops are better. From the end of the period to the end of the second half of the year, the southeastern part of the country is rainy and tidy. In some areas, heavy precipitation occurs and local farmland is flooded. The precipitation in most parts of Inner Mongolia is relatively small, the temperature is high, and the drought in the central and eastern regions continues to develop. Northwest, north and Huang-Huai light and temperature conditions in most areas is good, proper moisture should be conducive to the growth and development Kharif; mid-to-late early late, southeastern Northwest China, the Huang-Huai west rainfall intensity, low-lying farmland appear stains waterlogging. Eastern Jianghuai, Jiangnan rainy oligonucleotide according to the weather more, and more heavy precipitation along the river area, cotton, corn and other crops negative growth. Southern and south eastern South China Wen Gaoguang foot, conducive to mature and harvest rice filling, but hot weather in some areas more than 10 days daily maximum temperature ≥35 ℃, the rice grain plumpness been a constant influence, is not conducive to the growth of rice seedlings and shift planted; coastal mid-western parts of southern China in the late, late pre-typhoon "Conson" influence "Chan" of agricultural and fishery production suffered some losses were by. South West region most good hydrothermal conditions conducive to the growth Kharif; Sichuan Basin during the month appears concentrated heavy rainfall in eastern, western and southern parts of Yunnan, late, parts of eastern Sichuan Basin appear 5-9 light of day the highest temperature The high temperature weather of ≥35 °C is unfavorable for the growth and development of crops such as rice and spring maize.

Weather and climate characteristics

The temperature in most parts of the country is high, and the central and northeastern parts of the northwestern region, Inner Mongolia, and most of northern China are 2 to 4 °C high . The precipitation area is mainly concentrated in the southeastern part of Northeast China, the southeastern part of Northwest China, the western part of Huanghuai, and the southwest of Jianghuai. Ministry, Jianghan, northern Jiangnan, eastern part of southwestern China, western and southern Yunnan, etc., most of the above-mentioned areas have more than 15 days of rainy days.

Analysis of Agricultural Meteorological Conditions in Major Agricultural Areas

Northeast China: The hydrothermal conditions are more suitable in most of the upper and middle periods, and the development of crops is accelerated and the growth is better. From the end of the period to the end of the second half of the year, the southeastern part of the northeastern region has more rainy and idyllic weather, and the soil continues to be too wet, which is not conducive to crop growth and development; strong precipitation occurs in parts of southeastern Liaoning and central and eastern Jilin, floods occur locally, and crops are flooded.

Area of Inner Mongolia precipitation is less than 5 percent to 1 times, high temperatures 2 ~ 4 ℃, Midwestern high 4 ~ 6 ℃; in most areas of the central 5 to 10 light of day since the maximum temperature ≥ 14 July The drought continued to develop at high temperatures of 35 °C .

Northwest, North China, Huanghuai area: Most of the light and temperature conditions are good, which is conducive to the growth and development of autumn harvest crops. In mid-late and late in the mid-eastern Gansu, southern Shaanxi, Henan, north-west and south, rainfall intensity by region in southwestern part of Shandong large, low-lying farmland appear waterlogging; late, Shaanxi, eastern, most of North China, Huang-Huai and other places in Central In some areas, there are 3 to 5 days of high temperature with a maximum temperature of ≥35 °C , which is unfavorable for cotton flowering and ringing .

Yangtze River: early to late a few rainy days mid-most areas of 13 to 20 days, rainy oligonucleotide according to persistent soil is too wet cotton, spring corn and other crops negative growth; along the Yangtze River and more strong precipitation, storms and flooding caused by low-lying farmland Flooded, one season of rice lodging, cotton buds falling off. The weather improved in the late second half of the year, and the soil over-wet condition improved, which was conducive to the recovery of crops. However, in the southern part of Jiangsu Province, eastern Hubei, and parts of northern Hunan, there are three days of high temperature with a maximum temperature of ≥35 °C , which is not conducive to cotton flowering and rice seedlings.

Jiangnan, South China: South China south of the southern and eastern Wen Gaoguang foot, which will help harvest rice grain filling and drying; southeastern Hunan, Jiangxi, western, central Zhejiang, Fujian in eastern parts of Guangdong and Guangxi, the emergence of more than 10 days daily maximum temperature ≥ 35 ℃ hot weather is not conducive to improving rice grain weight and rice seedling growth; coastal mid-western parts of southern China in the late, late pre respectively by the "Conson" typhoon "Chan had" the heavy rainfall, agriculture and Fishery production suffered some losses.

Southwest China: Most of the hydrothermal conditions are good, which is conducive to the growth and development of autumn harvest crops. Concentrated heavy precipitation occurred in the eastern part of the Sichuan Basin, in the western part of Yunnan and in the southern part of the country. In the late part of the Sichuan Basin, the highest temperature of ≥35 °C in 5 to 9 days in the eastern part of the Sichuan Basin was unfavorable for the growth and development of crops such as rice and spring maize.

Major agricultural meteorological disasters

Heavy rains, floods: the provincial parts of Heilongjiang, Jilin, Liaoning, Shaanxi, Gansu, Ningxia, Shandong, Henan, Anhui, Jiangsu, Zhejiang, Jiangxi, Hubei, Chongqing, Sichuan, Guizhou, Yunnan, Guangxi and so was the case of heavy rain, floods, Among them, Heilongjiang crops suffered 356.23 thousand hectares due to heavy rain and floods , and closed 131.06 thousand hectares; Jilin 302.8 thousand hectares; Liaoning 242.8 thousand hectares; Shaanxi 202.8 thousand hectares, 37.6 thousand hectares; Gansu 63.01 thousand hectares, 8.58 thousand hectares; Ningxia 1.8 thousand ha, 0.5 one thousand hectares of crops; Hebei Province July 19 to 27, 38.8 one thousand hectares of agricultural crops affected; Shandong 232.3 one thousand hectares; Henan 260.57 one thousand hectares; Anhui 503.4 thousand hectares, 69.8 one thousand hectares of crops; Jiangsu 100 thousand hectares of crops 5 one thousand hectares; Zhejiang 31 one thousand hectares; Jiangxi 233.6 one thousand hectares; Hubei 1153.57 one thousand hectares; 44.3 one thousand hectares of Chongqing; Sichuan 523.5 one thousand hectares; 110.4 one thousand hectares Guizhou; 7.8 one thousand hectares in Yunnan; Guangxi 1.6 one thousand hectares, 98 hectares of crops.

Drought: Shaanxi's crops affected by drought were 52.6 thousand hectares; Shanxi was 464.46 thousand hectares; Hebei 225.6 thousand hectares, 37.4 thousand hectares; Inner Mongolia 1836.1 thousand hectares, 177.5 thousand hectares.

Hail: some areas of Gansu Province, Inner Mongolia, Liaoning, Heilongjiang, Anhui, Jiangsu, Jiangxi occurred hail disasters, Gansu one thousand hectares of crops affected area of 4.4; Inner Mongolia 65.3 million hectares, 22.1 one thousand hectares of crops; 253.5 hectares Liaoning; Heilongjiang 21.2 Thousands of hectares; Anhui 44.6 thousand hectares; Jiangsu 26.0 thousand hectares, 0.16 thousand hectares; Jiangxi 2.6 thousand hectares, 88 hectares.

Typhoon: Typhoon "Conson", "Chan had" affected some areas of Hainan, Guangdong, Guangxi, crop losses, which, Hainan crops affected area of 34.1 million hectares, 1.1 one thousand hectares of crops; 194 one thousand hectares, Guangdong Province, crops 22.3 Thousand hectares; Guangxi 54.2 thousand hectares, 1.9 thousand hectares.

Prospects and recommendations for agrometeorological conditions

Expected in August, except for southern Shaanxi, western Henan, Hubei, northwestern, eastern Sichuan, Chongqing and other areas in northern temperatures lower than normal over the same period, the rest of the country earlier than normal temperatures in most areas is high, the overall meteorological conditions conducive to crop growth and harvest Development and yield formation. Most of Inner Mongolia, northwestern Shaanxi and other places have high temperatures and less precipitation, and the drought will continue to develop. In the central and southern parts of the south of the Yangtze River and in the central and eastern parts of South China, the temperature is high and the precipitation is less. The possibility of drought is greater, which is not conducive to the growth of late rice and the tillering.

　　 August, Liaoning, Jilin, southeastern, southern Shaanxi, southern Shanxi, southern Shandong, Henan, most, Jianghuai and Jianghan, northern Hunan, Zhejiang and most, northeastern Fujian, Sichuan and other places in eastern biased and more precipitation. Rainy and irritating, soil over-wet and possible waterlogging in local farmland are unfavorable for the growth and development of crops such as corn, cotton and rice. In addition, in August there will be two to three tropical cyclones made landfall in China's coastal areas, bringing strong winds, heavy rainfall in coastal areas is not conducive to agricultural production.

Suggestions for this:

　　 1. Autumn harvest crops such as cotton, spring corn and soybeans in the north have entered the stage of flowering and fruiting. All localities should strengthen field management, timely remove field weeds, improve ventilation conditions, rational fertilization, and promote crop yield formation. Northwest China should seize the fine weather, timely harvest of spring wheat, and strive particle positions; southeastern Northeast China, Huang-Huai Rainfall in the region should pay close attention to heavy rainfall, drainage ditch clearance in time to avoid or mitigate disasters on grain and cotton harvest Crops cause losses.

　　 2. The middle and lower reaches of the Yangtze River should continue to do a good job in flood prevention and drainage, strengthen the field management of crops damaged by waterlogging, and increase the application of quick-acting fertilizer to promote the transformation of seedlings. In addition, areas with high temperatures should strengthen farmland water management and reduce the adverse effects of high temperature on the growth and development of crops such as rice and cotton.

　　 3 , Jiangnan, South China rice area should avoid transplanting late rice at high temperature during the high temperature period, pay attention to water temperature regulation, prevent high temperature hazard, increase the survival rate of seedlings returning to green; and pay attention to scientific plan water use to prevent possible drought and drought on crop growth and development Negative Effects.

　　 4. The southwestern region should harvest the mature spring corn and tobacco leaves in time; at the same time, it is necessary to strengthen the water and fertilizer management of the first season rice, laying the foundation for the formation of large spikes and increasing the number of grains per ear.

　　 5. All localities should strengthen the monitoring and control of pests and diseases; coastal areas should closely monitor tropical storms and do a good job of defense to minimize the damage.