Abstract
Cultivated land is the fundamental guarantee of food security, and saline-alkali land affects the quality of cultivated land to varying degrees. It is of great significance to study saline-alkali land improvement measures to solve the problem of saline-alkali land utilization, promote the healthy development of agriculture and animal husbandry, and improve the quality of cultivated land. The author has sorted out the relevant literature and reports on the improvement methods and technologies of saline-alkali land at home and abroad in recent years, and introduced the status and effects of different improvement measures for saline-alkali land from four types: chemical improvement measures, physical improvement measures, water conservancy improvement technology and biological improvement measures. It provides a theoretical basis for the study of governance and saline-alkali land improvement measures.
Highlights
Saline-alkali land is a general term for saline soil and alkaline soil
Cultivated land is the fundamental guarantee of food security, and saline-alkali land affects the quality of cultivated land to varying degrees
The author has sorted out the relevant literature and reports on the improvement methods and technologies of saline-alkali land at home and abroad in recent years, and introduced the status and effects of different improvement measures for saline-alkali land from four types: chemical improvement measures, physical improvement measures, water conservancy improvement technology and biological improvement measures
Summary
Saline-alkali land is a general term for saline soil and alkaline soil. Its low organic matter content and poor soil fertility will seriously affect the survival and growth of plants, which has become a worldwide problem. How to reduce the degree of soil salinization, improve soil fertility, and use effective improvement measures to create a suitable soil ecological environment has been the focus of many experts and scholars [1]. The method of comprehensive management is the most effective, mainly as follows: prevention first and equal emphasis on prevention and control; comprehensive management and water conservancy first; unified planning and measures according to local conditions; In recent years, in addition to using traditional methods to transform soil, many experts and scholars have begun to extend and transfer to the direction of cultivating salt-tolerant plants [3], and develop new crops and new technologies to improve the management of saline-alkali soils [4]. The traditional improvement measures can be roughly divided into four major aspects: physics, chemistry, water conservancy and biology
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