What effect does the rain have on us?

1. Build terraces to retain rainwater and develop rain-fed agriculture.

In arid and semi-arid areas, because of the complex terrain, many gullies, thin soil layer and poor ability of water and fertilizer conservation, the runoff generated by rainfall quickly drains away and washes away the soil, which is prone to drought after rain, and the crop yield is low and unstable. Therefore, engineering measures must be taken to build high-standard terraces. In order to better intercept rainwater, ditch sowing technology is generally used.

This can increase the reserves of available water in the soil and enhance the drought resistance. Coupled with agricultural farmland measures, such as drought-resistant seeds, increased application of organic fertilizer, soil film mulching and so on. It can not only increase agricultural output, but also prevent soil erosion and reduce the harm of sediment to rivers.

2. Use courtyard, yard and roof to collect rain and develop courtyard economy.

There are generally rolled courtyards and yards in front of and behind farmers' houses and at the edge of villages, and the roofs are mostly cement lime soil and tiles, which create conditions for collecting rainwater.

According to the local rainfall, rainfall intensity and rainwater collection area, water storage facilities (water cellar, water kiln) will be built in the courtyard, beside the courtyard or on the ground to intercept and store rainwater in flood season. Limited water sources can not only solve people's drinking water problem, but also be used to develop courtyard economy. Such as planting, breeding and small-scale processing.

Practice has proved that this is an effective way for people in mountainous areas to get rid of poverty and become rich and well-off. At the same time, it also improved the sanitary conditions in mountainous rural areas, reduced diseases and improved the health level.

3. Use sloping fields and roads to collect rainwater and develop farmland crop irrigation.

Generally speaking, there are many asphalt roads or gravel roads in the countryside, and there are many dirt roads. These slopes and roads can collect rainwater directly or after modification. Generally, dirt roads should be leveled and rolled, and cross slopes that drain to the roadside should be set. On some barren slopes, the original soil should be compacted, and the compacted dry bulk density should not be less than 1.5t/m3.

If the natural rainwater collection surface is insufficient, an artificial seepage prevention and water storage project (water cellar or water kiln) can be built. Water cellar (dry well) generally stores 30-50m3, and water kiln generally stores 100-200m3. With an appropriate irrigation system, field crops (grains, melons, etc. ) It can be irrigated. Due to the limited amount of water, key water or life-saving water is generally used.

4. Develop agriculture and forestry irrigation in combination with comprehensive management of small watersheds.

In hilly areas, combined with small watershed management, soil and water conservation and rainwater harvesting irrigation are organically combined. Through comprehensive measures such as collecting, intercepting, diverting, storing and irrigation, rainwater resources in this basin are fully utilized to develop field crops or woodland irrigation, which not only protects soil and water, but also promotes the development of agriculture and forestry in mountainous areas.