<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区
            Home>News Center>China
                 
           

          Locust plague devastates crops
          By Qin Jize (China Daily)
          Updated: 2004-06-24 00:01

          An upsurge of oriental migratory locusts in North China and the Yangtze River areas has spiraled into a plague that is devastating crops.


          An epidemic-prevention staff member from the grasslands center in Sonid Youqi of Inner Mongolia Autonomous Region shows some locusts killed by pesticides. [newsphoto]
          The infestation affected 970,000 hectare of farmland in ten provinces and municipalities, said the Ministry of Agriculture.

          Grasshoppers have attacked more than 13.3 million hectares of grassland. Half of that is in Inner Mongolia.

          Grasshoppers do not migrate and are less harmful than locusts.

          Plant protection departments have brought the infestation under control in 482,000 hectares of farmland, Xinhua reported.

          And more resources are on the way, including insecticides, equipment and manpower.

          So far, the central government has invested 5 million yuan (US$604,500) and plans to spend 50 million yuan (US$6 million) more.

          A plague of locusts is a large, population present in at least two major regions. Locusts are normally lone creatures, but when their numbers boom, they modify their behaviour and group together. Migratory locusts are more harmful than the non-migratory ones.

          Hebei Province, one of the spots most seriously hit, is being sprayed with insecticide using planes as well as ground plans to kill the swarms.

          To minimize ecological damage, the ministry tried to fight the plague using biological and ecological methods.

          From late May, 6.7 million hectares have been set up as sample field in which more environmental-friendly biopesticides have been used.

          Other more environmentally sound alternatives, like improvement of the plantation of the plague area and taking the advantage of natural enemies were also used in the country's 8-million-hectare sample areas.

          Earlier, a Xinhua report said that China's first airport for locust control started operation on June 17 in East China's Shandong Province.

          Located in Kenli County in the rural area of Dongying, the airport has a concrete runway and parking lot totalling about 40,000 square metres. The runway is 670 metres by 34 metres.

          China approved the construction of three airports devoted exclusively to locust elimination in 2001, including the one in Shandong.

          In another development, State Forestry Bureau said that forest pests are causing great loses to China this year.

          Pests have attacked area 8.7 million hectares this year.

          Experts estimate economic loses will be 100 billion yuan (US$12 billion) and there is no end in sight.

          The pest attack is more serious and diversified in South China than in the northern part. North and Northeast China are relatively better off.

          Growing foreign trade has brought with it a growing number of alien invasive species.

          A warm and dry climate and the structure of the forest, which features large proportion of baby-trees, also help the pests develop.

          An insect pest in South China's Shankou Mangrove Reserve at the end of May destroyed 66.7 hectares of in two weeks, the Xinhua News Agency reported.

          Mangrove expert Fan Hangqing said the destruction in the city of Fangchenggang along the Sino-Viet Nam border was caused by a kind of caterpillar. He attributed the pest's arrival to constantly expanded offshore aquatic breeding.

          Warning that such negative impacts are slow but cumulative, Fan said the pest attack is a sign of a destroyed mangrove ecosystem.



           
            Today's Top News     Top China News
           

          Price hikes not to stop until October

           

             
           

          DPRK: Concrete plans can help nuclear talks

           

             
           

          Audit: US$170 million misused in budget

           

             
           

          China set to clarify bankruptcy protection

           

             
           

          43 missing in boat capsizal feared dead

           

             
           

          Migrant workers get injury insurance

           

             
            43 missing in boat capsizal feared dead
             
            Audit: US$170 million misused in budget
             
            China aims at regional maritime law centre
             
            Migrant workers get injury insurance
             
            Shanghai to deal with shortage of places to go
             
            Development fund to aid small, medium firms
             
           
            Go to Another Section  
           
           
            Story Tools  
             
            News Talk  
            When will china have direct elections?  
          Advertisement
                   
          主站蜘蛛池模板: 337P日本欧洲亚洲大胆精品555588| 挺进朋友人妻雪白的身体韩国电影 | 又湿又紧又大又爽A视频男| 国产精品乱码人妻一区二区三区| 欧美黑吊大战白妞| 国内揄拍国内精品人妻| 国产亚洲欧美日韩国产片| 久久热精品视频在线视频| 久久aaaa片一区二区| 精品午夜福利在线视在亚洲| 99久热在线精品视频| 久久婷婷大香萑太香蕉AV人| 2020国产欧洲精品网站| 亚洲AV无码国产在丝袜APP| 日本一道一区二区视频| 亚洲中文精品人人永久免费| 亚洲春色在线视频| 一本一本久久久久a久久综合激情| 国产偷国产偷亚洲综合av| 超碰成人人人做人人爽| 久久热99这里只有精品| 亚洲高潮喷水无码AV电影| 永久免费在线观看蜜桃视频| 欧美色a电影精品aaaa| 狠狠色狠狠综合久久| 久久人人爽人人片AV欢迎您| 国产午夜精品一区二区三| 国产稚嫩高中生呻吟激情在线视频| 日本精品中文字幕在线不卡| 亚洲国产天堂久久国产91| 99在线视频免费| 亚洲 小说区 图片区 都市| 日本高清视频网站www| 日本一区不卡高清更新二区| 欧美精品一区二区三区在线观看| 国产一区在线播放无遮挡| 漂亮的人妻不敢呻吟被中出| 天堂在线最新版在线天堂| 无套内谢少妇一二三四| 亚洲精品天天影视综合网| 日韩精品一区二区三区在线观看的|