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黄土高原年降水量300—500毫米,基本上属半干旱地区,增产途径应从两方面着手。一、充分利用降水资源:①建设保水保土的基本农田,最重要的形式是水平梯田。一般年份,水平梯田的产量高于坡地约20—100%。②发展径流农业。如应用的沟道打坝蓄水、引洪漫地等办法都可视为径流农业的范畴。但应着重提倡微型径流农业(微积水面积)。天然蓄水主要应作为补充用水。当前在一些有条件的地方有计划地多打旱
The annual rainfall of 300-500 mm in the Loess Plateau is basically a semi-arid area, and the stimulation of yield should proceed from two aspects. First, take full advantage of precipitation resources: ① the construction of basic farmland water and soil protection, the most important form of horizontal terraces. In general years, the yield of terraced fields is about 20-100% higher than the slope. ② Development of runoff agriculture. Such as the application of channel dams dam impounding floods and other methods can be considered as the scope of runoff agriculture. However, it is important to promote micro-scale runoff agriculture (water area). Natural water storage should mainly be used as supplementary water. There are plans to increase drought in some areas where conditions permit