【摘 要】
:
定西、会宁县位于甘肃中部的黄土高原丘陵沟壑区,是两个比较有代表性的雨养农业县,旱耕地面积占总耕地面积的85—86%以上。年降水量300—450毫米,为半干旱、干旱气候区。小麦
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定西、会宁县位于甘肃中部的黄土高原丘陵沟壑区,是两个比较有代表性的雨养农业县,旱耕地面积占总耕地面积的85—86%以上。年降水量300—450毫米,为半干旱、干旱气候区。小麦播种面积约占粮食作物面积40%左右。由于干旱缺水,水土流失严
Dingxi, Huining County is located in the gully area of the Loess Plateau in the middle of Gansu. It is the two representative rainfed farming counties. The area of dry farmland accounts for 85-86% of the total cultivated land. Annual precipitation 300-450 mm, for the semi-arid, arid climate zone. Wheat sown area accounts for about 40% of the area of food crops. Due to drought and water shortage, soil erosion is serious
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