从干旱地区的特点出发探索发展旱作农业的途径

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从干旱地区的特点出发探索发展旱作农业的途径

- 从干旱地区的特点出发探索发展旱作农业的途径
- Bulletin of Soiland Water Conservation Vol. 2, Issue 6, Pages: 10-16(1983)
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- Published：1983
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[J]. Bulletin of Soiland Water Conservation, 1983, 2(6): 10-16.
DOI：

[J]. Bulletin of Soiland Water Conservation, 1983, 2(6): 10-16. DOI：

摘要

一延安地区位于黄河中游，属黄土高原丘陵沟壑区。全区共辖13个县、一个市

总面积3.8万多平方公里，折合5

700多万亩。在总面积中，有森林1

930多万亩

占33%；草坡2

000万亩，占34%；耕地565万亩，占10%(其中川、原地约占30%)。年平均降雨量500多毫米，北部只有400多毫米，无霜期平均176天，最短的100天左右，属于半干旱气候。农作物多是一年一熟，除南部原区适宜种小麦、油菜外

大部分地区只宜种糜谷、玉米、豆类、洋芋等秋杂粮。

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