A Straw Utilization Method for Alleviating Soil Salinization

Abstract

The invention discloses a straw utilization method for alleviating soil salinization in the technical field of agricultural (vegetable) cultivation, which is characterized in that it comprises the following steps: for a greenhouse where soil salinization is caused by excessive application of N fertilizer; It is suitable for upright growing wet crops with fully moist surface soil; choose herbaceous crop stalks with high carbon content, and spread the straws in furrows; use furrow irrigation or spraying to make the furrows fully moist and hold water for a short time in the furrows ; During agricultural operations such as fertilizing, spraying, and harvesting, trample on the straw in the furrow; when the straw in the furrow is completely decomposed and time permits, if there are still purple coccus or green moss on the soil surface of the furrow, continue to the furrow. Add straw in the ditch; if there is no Porphyridum or green moss in the ditch, it means that the soil salinization has been alleviated. The invention can realize the depletion of excess NO in the soil 3 ‑ ions to alleviate soil salinization.

Description

technical field [0001] The invention belongs to the technical field of agricultural (vegetable) cultivation, and in particular relates to a straw utilization method for alleviating soil salinization. Background technique [0002] At present, the obstacle of continuous cropping of facility vegetables has become the bottleneck problem of high-quality and safe production of vegetables, and soil salinization is one of the main factors of continuous cropping obstacles. Excessive fertilization, high multiple cropping index and heavy cropping in the production process are important reasons for soil salinization. Compared with other fertilizers, N fertilizer is the most widely used and concentrated fertilizer in facility agricultural production. According to the principle of "salt goes with water", in the case of planting conventional xeric vegetables, NO 3 - The ion-dominated soil salinity mainly accumulates in the topsoil, NO 3 - The ions are easily soluble in water. After ir...

AI Technical Summary

Problems solved by technology

This method can reduce the secondary salinization of soil, but its disadvantage is that it needs to cut the straw into sections, crush it, mix it with the soil by plowing, and bury it deeply. The steps are complicated and the operation cost is high.

This method can quickly degrade soil salinity and change the content of various ions in the soil, but its disadvantages are: the steps of mixing straw with fertilizer or chitosan solution are cumbersome and costly

[0007] The technology of covering rice and wheat straw on the shallow water field soil surface in the facility, combined with the ecological mode of water and dry rotation of facility vegetables to prevent and control continuous cropping obstacles, covers the soil surface of rice and wheat straw between rows of aquatic vegetables in the facility to maintain a water layer of about 5cm, which can not only drown and kill xerophytes Plant diseases, insect pests and weeds can reduce the base number of vegetables, and can use the nutrients released by straw decomposition to improve the yield and quality of aquatic vegetables in the current season, or partially replace chemical fertilizers. Soil properties (Yan Wuwei, 2017), but need to maintain a shallow water layer, it is difficult to apply in areas with poor water resources