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National grassland return to normal

  • Categories:Industry news
  • Author:
  • Origin:
  • Time of issue:2019-12-16
  • Views:6

National grassland return to normal

(Summary description)The Ministry of Agriculture has adopted methods of ground observation, satellite remote sensing, and analysis of meteorological data to monitor and analyze the status of grassland pasture return in the country.

  • Categories:Industry news
  • Author:
  • Origin:
  • Time of issue:2019-12-16
  • Views:6
Information

The Ministry of Agriculture has adopted methods of ground observation, satellite remote sensing, and analysis of meteorological data to monitor and analyze the status of grassland pasture return in the country. The results showed that the temperature of the grassland area rose faster after the spring of this year, and most of the grasses entered the greening time earlier than usual. However, due to the low temperature in the later period, the grassland greening process was slower and the greening period was longer. Postponed; as of May 20, 85% of the country's grasslands have returned to green, and the rate of return to green has been roughly the same as that of normal years. The return of grasslands to the Qinghai-Tibet Plateau and high-altitude areas of Xinjiang is later than normal.

Since the beginning of spring, China's grassland areas have generally exhibited a meteorological pattern of high temperatures in the early stage, low temperatures in the later period, and more precipitation in the east and less precipitation in the west. After March, the temperature in most prairie regions is close to the same period of the year or high, with temperatures in the northeast, most of Inner Mongolia and eastern Qinghai being 1 to 2 ° C higher, and parts of central and eastern Inner Mongolia 2 to 4 ° C higher. Good heat Conditions are conducive to melting snow, thawing soil, and forage germination. However, since the middle and late April, due to the strong cold air, the temperature in most northern grassland areas has been lower than the same period of the year, which has negatively affected the normal greening and growth of pastures. During the spring and summer, except for the northeast, central and eastern Inner Mongolia, and southern Tibet, most of the prairie regions in China had less precipitation. Among them, western Inner Mongolia, most of Xinjiang, and the central and western parts of the Qinghai-Tibet Plateau had less than 30% precipitation. The soil loss is rapid and spring drought occurs in some grasslands.

According to satellite remote sensing monitoring and observations of 990 ground samples in 100 counties, as of May 20, 85% of grasslands across the country have returned to green, and the rate of return to green is roughly the same as usual. Among them, the grassland returning time of Inner Mongolia and Sichuan grasslands is generally 5 to 10 days earlier than usual, Xinjiang grassland returning time is 5 to 15 days later than usual, and the grassland returning time of western Tibet is 5 to 10 days later than usual. At present, the growth status of the steppe vegetation that has returned to green is generally normal, and the areas with preferred growth conditions are mainly distributed in central Inner Mongolia, Gansu, and most of Sichuan. The areas with deviating growth conditions are mainly distributed in southern Xinjiang and western Qinghai-Tibet Plateau. Periodic drought. The grasslands that have not yet returned to the green are mainly located in the Qinghai-Tibet Plateau and high-altitude areas of Xinjiang. It is expected that the grasslands in these areas will return to green before early June.

From the main pastoral areas: Xinjiang grasslands have been returning to green since early April, and the returning time is later than usual. The returning time of grasslands in northern Xinjiang is generally delayed by 5-10 days, and the returning of grasslands in southern Xinjiang is generally delayed by 10-15 days. Sichuan grassland returned to a large area in the middle and late April. The time of pasture return was generally 5 to 10 days earlier than usual. After returning to the pasture, the pasture growth was good. The period of pasture greening in Gansu grasslands is basically the same as that in normal years. As of mid-May, 90% of the grasslands in the province have returned to green. Among them, Gannan meadow grasslands returned to green 3 to 10 days earlier, and Gulang County and other temperate desert grasslands in the Midwest were delayed by about 6 days . The grassland return time in Inner Mongolia is 5 to 10 days earlier than usual. Grassland grass return in the central and eastern regions is 5 to 10 days earlier than usual. The grassland vegetation cover in Xilinguole League has increased by 10 percentage points compared to the usual year. However, due to strong winds and cooling weather, vegetation growth is slightly worse. The Qinghai grassland gradually returned from low to high altitude areas from mid to late April, and the rate of return to green was roughly the same as that of normal years. The Tibetan grassland has gradually returned to green from east to west since mid-late April. The time for returning pasture to green in the western region has been delayed by 5-10 days compared with normal years.

Since the end of May, the temperature in the country has been abnormally high, and the temperature in the grassland area has risen significantly. According to the forecast of the National Climate Center, it is expected that the temperature of most grassland areas in the country will continue to be high in the future, and precipitation in most of Xinjiang, Qinghai and western Tibet may be low. All localities should make reasonable arrangements for grassland production and animal husbandry management in accordance with the current grassland regrazing situation and meteorological conditions. In drought-prone grassland areas, it is necessary to actively do a good job in combating drought and preventing disasters, and guide herders to extend the time of house feeding and reduce the grazing intensity of natural grasslands. It is necessary to strengthen the supervision of grass-animal balance, do a good job of banning grazing in the spring, and consolidate the effectiveness of the subsidy policy for grassland ecological protection. At the same time, we must do a good job of monitoring and controlling rodent pests, and effectively strengthen grassland fire prevention work.

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