1 Major scientific and technological innovation contributions
(1) Through the experimental study on salinized soil treatment in Weinan and Lubotan areas, a comprehensive management model of salinized soil water improvement technology and a “water conservancy combination” model were proposed.
(2) In the management model of saline-alkali land, which is “re-arranged for storage and storage”, the optimal size, proportion, model and rational planning and layout of the project storage and drainage were established.
(3) Studies have found that chemical improvers can effectively reduce soil pH and reduce the stress of salinized soil on crop growth. The humus and microorganisms produced by reed decay can play a role in biological alkali-changing, and plant growth regulators can enhance growth in salinization. Plant resistance in the soil, which in turn adapts to the salinized soil environment.
(4) Carry out the experiment on the growth of crops under brackish water irrigation, the study on the irrigation system of crops under film cover, and the research on crop irrigation under straw cover.
(5) Developed an intelligent precision irrigation control system, realized data acquisition of irrigation flow sensor and water potential sensor through the system's irrigation controller, supervised precision control irrigation forecasting and decision model, and assisted artificial intelligence irrigation management.
2 Results application
(1) Using the “water conservancy combination” model to improve the technology, the total construction scale of the third and fourth phase of the management project of Halbotan is 7565 mu, the newly added cultivated land area is 7128 mu, and the newly added cultivated land rate is 94%; the total construction of Gaocheng Village project in Beoshi Township, Dayi County The scale is 4,812.24 mu, the newly added cultivated land is 4504.46 mu, and the newly added cultivated land rate is 94.25%. The saline-alkali land with clear land ownership rights in the core beach area of Halbo Beach has been completed, and 10,000 mu of standard farmland has basically formed.
(2) The area of improved technology promotion in southern Anhui is 3.788 million mu, and the technical coverage rate reaches more than 90% of the implemented area, which has long-term significance for the development of conservation-oriented and sustainable agriculture.
