Plantation method for saline-alkali land greenhouse in river bend

Abstract

The invention discloses a plantation method for a saline-alkali land greenhouse in a river bend. Concretely, the greenhouse plantation method comprises steps of (1) deeply ploughing the saline-alkali land, (2) digging trenches and arranging ridges, (3) burying drainage closed conduits fertilizer, (7) irrigating, managing the field and preventing insect diseases and harvesting crops. With ways of special deep tillage, trench and ridge arrangements, closed conduit burying, broadcasting, greenhouse building and fertilizer applying, saline-alkali degree of the saline-alkali land in the river bend irrigated area can be effectively controlled; the crops can normally grow under the condition and be harvested; and a new thought and method can be provided for effective utilization of the saline-alkali land in the river bend irrigated area.

Description

technical field [0001] The invention belongs to the technical field of agricultural planting, and relates to a greenhouse planting method on saline-alkali land in Hetao irrigation area. Background technique [0002] The Hetao area refers to the "Ji" bend of the Yellow River and its surrounding watersheds, which have provided the Chinese nation with rich resources since ancient times. There is also a folk saying that "the Yellow River is full of harm, but only rich." However, the Hetao area is also the area with the most serious soil salinization in the Yellow River irrigation area. There are about 15 million mu of secondary saline-alkali land. The saline soil has a high amount of salt, most of which are water-soluble salts such as chlorides and sulfates. The project is difficult, and the excavation will form quicksand. If there is such a project, the construction measures of precipitation should be taken first. However, the watering method in this area is mostly flood irrig...

AI Technical Summary

Problems solved by technology

But there is also a problem that cannot be ignored at present, that is, the soil in the greenhouse is prone to salinization. There are four reasons for this: 1. A large amount of chemical fertilizers are used, and the part that cannot be absorbed and utilized by plants will remain and accumulate in the soil; 2. Nitrification in the soil produces nitrate, which will also accumulate; 3. The greenhouse is basically not affected by rainfall, the amount of water for each irrigation is also small, and the fertilizer components rarely flow into the lower soil, causing salt to accumulate in the surface soil ;4. Affected by the greenhouse effect, the temperature in the greenhouse is relatively high, and the evaporation of soil water is large. The salt in the fertilizer rises to the surface with the help of capillary water, and white salts will precipitate on the soil surface.

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