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1农业生产存在的问题朝阳县位于辽宁省辽西地区,属半干旱半湿润偏旱气候,年降水量450～500mm,气候冷凉,年平均气温8～9℃,年有效积温2700～3300℃,雨热同季,无霜期120～150天。农业属一年一作制,主要种植作物有玉米、高粱、大豆及少量小麦。(1)水资源匮乏,旱灾频繁。辽宁省是我国北方严重缺水的省份之一,全省人均水资源量仅为世界人均水量的1/12,为全国水量的1/3。地表水量为全国人均的1/3,
1 Problems in Agricultural Production Chaoyang County, located in the western Liaoning Province, is a semi-arid and semi-humid dry climate with an annual precipitation of 450-500 mm. The climate is cool and the annual average temperature is 8-9 ° C. The annual effective accumulated temperature is 2700-3300 ° C, Heat rainy season, frost-free period of 120 to 150 days. Agriculture is a one-year crop, the main crops are corn, sorghum, soybeans and a small amount of wheat. (1) Water scarcity, frequent droughts. Liaoning Province is one of the provinces where there is a serious water shortage in northern China. The per capita water resources in the province is only 1/12 of the world average and 1/3 of the national total. Surface water is 1/3 of the national average,