At present, autumn harvest crops have entered a critical stage of production formation. It is expected that from late August to October, most of the country's temperature will be close to normal or high in the same period. The caloric conditions are generally favorable for the growth and yield of autumn harvest crops; precipitation is less in most areas. Conducive to the late maturity of crops. However, some areas may have staged high temperature and rainy weather, which will affect the filling of rice, corn, and late rice growth and cotton cracking and boll opening. In the eastern part of Inner Mongolia and the northeastern part of the country, the precipitation in the south of the southeastern part of the country is less than 2 to 50% in September-October, and drought may occur. Autumn drought may occur in southeastern Guizhou and central and northern Guangxi, and may occur in Gansu Hexi Corridor, Ningxia and western Inner Mongolia. Early frost can have an adverse effect on agricultural production. It is recommended that all localities should strengthen the management of the field in the later period, and strive to increase the harvest of grain and cotton crops in autumn.
According to the analysis of the information of the Agricultural Meteorological Observation Network, at present, the first season rice is in the stage of heading and flowering, the late rice is in the stage of greening to tillering, the majority of the north is in the stage of silking and silking, the southern part of the corn is in the stage of maturity to maturity, and the soybean is in the stage of pod-forming. Cotton is in the stage of flowering and ringing, and the overall harvest of grain and cotton crops in autumn is good, and the development period is close to normal. Only the cotton development period of Sichuan one season rice and Hubei is slightly later than normal. At present, most of the country's agricultural areas are suitable for soil moisture, and only mild to moderate droughts exist in southeastern Guizhou, north-central Guangxi, and southern Hunan.
It is expected that most of the crop yield areas in the autumn harvest in late August will be high in temperature and precipitation, and the meteorological conditions will be more favorable for the formation of autumn harvest crops.
It is estimated that in late August of 2011, precipitation in northern Xinjiang, eastern Inner Mongolia, western and southern parts of northeastern China, eastern and southern parts of North China, most of Huanghuai, Jianghuai, Jianghan, northeastern part of the Yangtze River, northwestern part of Tibet, and most of Tibet are relatively normal. Most of them, most of the Jianghuai and the eastern part of Jianghan are 2 to 50%. Precipitation in most other parts of the country is less than normal in the same period of the year. Among them, the southeastern part of southwestern China and the southwestern part of China are less than 2 to 50%. Except for the lower temperature in the eastern part of Huanghuai and the lower part of the Yangtze River and Huaihe River, the temperature in most other parts of the country is higher than normal. Among them, the northwestern part of the northwest, the northwestern part of the southwest, the western part of Huanghuai, and the western part of Jianghan are 1~2°C higher. . It is expected that on the 19th and 22nd, Jianghan, Jianghuai, Jiangnan, central and northern South China and Chongqing will be dominated by high temperature and low rainfall. The daily maximum temperature is generally between 35 and 38 °C. On the 23rd to 27th, the high temperature weather in the above areas will be obtained. Alleviate.
In the second quarter of August, the autumn harvest crops such as rice and corn entered the grouting and fruiting period, which was the key stage for crop yield formation. Temperatures in most parts of the country are higher than normal, and thermal conditions are favorable for crop yield formation and maturity. The temperature in the eastern part of Huanghuai and the eastern part of the Yangtze River is low, which will have a slight impact on the progress of crop development. The western and southern parts of the Northeast, the eastern and southern parts of North China, the majority of the Yellow River and Huai, the Jianghuai, the Jianghan, the northeastern part of the Yangtze River, and the northwestern part of the southwestern part of the country have more precipitation, which is conducive to the increase of farmland soil and reservoir water storage; but some areas may The occurrence of rainy and irrational weather will affect the autumn harvest crops and mature harvest. The precipitation in the southeastern part of southwestern China and western China is less than 2 to 50%, and the precipitation in the eastern part of the northwestern region is also less. The drought in southeastern Guizhou and north-central Guangxi will continue or develop, which is not conducive to grain filling of rice, corn and other crops. The growth of winter rice in Guangxi may be insufficient. The continuous sunny and hot weather in the south of the south of the Yangtze River and the north-central part of South China is also unfavorable for the tillering of late rice.
It is estimated that in the early fall of 2011 (September to October), the precipitation in China is mainly characterized by the distribution of more north and south. Compared with the same period of the previous year, there are more precipitations in the southeastern part of Northeast China, most of North China, the eastern part of Northwest China, and the southern part of South China, including 2 to 50% of southeastern Gansu, central Shaanxi, southern Ningxia, and western Shanxi. Precipitation in most other parts of the country is less than normal in the same period of the year, with the eastern part of Inner Mongolia and the western part of the northeast and the south of the south of the Yangtze River being 2 to 50% less. Except for the northern part of North China, the southwestern part of Huanghuai, the northwestern part of Jianghuai and the eastern part of Jianghan, the temperature is slightly lower than that of normal years. The temperature in most other parts of the country is close to normal or high in the same period, especially in the southeastern part of Jiangnan and most of Yunnan. 1 to 2 ° C.
It is expected that in the autumn of this year, the first frost in most parts of the northeast, Beijing and Tianjin, Inner Mongolia and Xinjiang will be earlier than normal, but the initial frosts in Gansu Hexi Corridor, Ningxia and western Inner Mongolia may be slightly earlier than normal.
From September to October, the temperature in most agricultural areas in the country is close to normal or high in the same period of the year, and the precipitation is less. The meteorological conditions are conducive to the ripening of rice, corn, soybeans and other autumn harvest crops, increase the grain weight and harvest and dry; the high temperature will also benefit the south. Late rice speeds up the development process and reduces the risk of exposure to cold wind during the late growth period. Most precipitation in most parts of North China and the eastern part of Northwest China is conducive to drought relief in the northwestern dryland and suitable planting of winter wheat. However, the southeastern part of the Northeast and southeastern Gansu, central Shaanxi, southern Ningxia, and western Shanxi may have more autumn rains. Wet, may cause some crops to be late and ripe, increasing the risk of suffering from early frost, which is not conducive to full grouting in the later stage of crops. At the same time, the rain and fog will affect the cotton cracking and bolling and harvesting, which is not conducive to the normal maturity harvest of autumn harvest crops. In the eastern part of Inner Mongolia and the northeastern part of the country, the precipitation in the south of the southeastern part of the Yangtze River is less than 2 to 50%, and the precipitation in the southwestern part is also less, which is conducive to the harvesting of mature autumn harvest crops; autumn drought may occur in southeastern Guizhou and north central Guangxi, Gansu Hexi Corridor, Ningxia Early in the western part of Inner Mongolia and other places, the crop may be exposed to early frost damage.
Strengthening the management of the field in the later period, striving to increase the harvest of grain and cotton crops in autumn
At present, autumn harvest crops have entered a critical stage of production formation. All localities should strengthen the management of the field in the later period, and strive to increase the harvest of grain and cotton crops in autumn. Agricultural production advice:
1. The southern part of the Northeast, the southern part of North China, and the upper part of Huanghuai will be exposed to rainy weather. It is necessary to pay attention to preventing the crops from being greedy and late. The crops should be applied to the greedy crops in the later stage according to the growth of the crops. The crops are ripe and mature, to avoid the danger of early frost, and to ensure timely and timely sowing in the winter wheat area.
2, the northern autumn harvest crop area should strengthen field management, according to the growth of various crops, timely fertilizer, prevent premature aging of the crops, promote full grain filling, increase grain weight.
3, North China, Huanghuai cotton area should be timely topping pruning, suitable application of flower and bell fertilizer, and strive to multi-gate autumn peach, timely harvest mature cotton before the rain, improve production and quality. The cotton area of ​​the Yangtze River Basin can adopt measures such as sprinkler irrigation to reduce the air humidity in cotton fields, improve the microclimate of cotton fields, and mitigate the effects of high temperature.
4. The southern rice area should strengthen the management of rice fields, adopt measures such as water temperature regulation and foliar spray fertilizer to prevent high temperature hazards; and do a good job of water storage and conservation to prevent autumn drought. In particular, the southeastern part of the southwestern region and the southern part of the south of the Yangtze River should pay attention to the active development of water sources and scientific irrigation to alleviate the adverse effects of drought on crops.
5. All localities should strengthen the monitoring and prevention of pests and diseases, and at the same time pay attention to prevent the adverse effects of local heavy rainfall on agricultural production.
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