To ensure national food security, cultivated land protection and ecological protection should be strengthened.

To ensure national food security, it is necessary to do a good job in ecological protection, cultivated land protection and core agricultural area protection. The state has put forward a red line of 1.8 billion mu of cultivated land to ensure that the area of cultivated land is not reduced. Delineating the red line of ecological protection is an urgent need and effective means to curb the severe trend of ecological environment degradation.

To protect cultivated land and food security, first of all, it is necessary to stabilize the overall situation of major cultivated land and food security in the country. We should focus on the overall situation, from a strategic perspective, and in line with the attitude of being responsible to the Chinese nation for thousands of generations, determine strategic permanent basic farmland protection and concentration areas at the national level, to encircle and protect the large, concentrated, high-quality and high-yield basic farmland in the Huang-Huai-Hai agricultural area, the northeast agricultural area, and the middle and lower reaches of the Yangtze River, so as to prevent all kinds of non-agricultural construction from encircling and cutting basic farmland protection areas.

In hilly and mountainous areas, we should make overall arrangements for land for agriculture, forest and fruit industry and industrial production, and reserve enough land for living and ecology, so as to prevent competing occupation of cultivated land and over-development of cultivated land. We should guide "industrial uphill", build "terraced factories", advocate and promote the rational use of low hills and gentle slopes, issue preferential policies to encourage sloping land industry, and alleviate the contradiction between industrial project land and cultivated land protection. we will form a win-win pattern of protecting cultivated land resources and ensuring the development of land, so as to lay a foundation for the rapid and sound development of the mountain economy.

In Beijing, Shanghai and other metropolitan areas, rational allocation and construction of green infrastructure land. Shanghai's proposal to protect Shanghai's more than 3 million mu of arable land is to manage and protect Shanghai's "green lung", and to protect Shanghai's more than 1.6 million mu of paddy fields is to manage and protect Shanghai's "wetlands."

It is necessary to further improve the understanding of the connotation and ecological function of cultivated land quality, and pay attention to the ecological function of cultivated land. To improve the quality of cultivated land is not only to improve soil fertility and soil organic matter content, the most important thing is to enhance the production capacity of cultivated land. It is necessary to establish a new and comprehensive view of cultivated land quality with quantity as the premise, production capacity as the core, health as the guarantee, use and maintenance as the basis, efficiency as the guidance and supervision as the means. At the same time, special attention should be paid to the phenomenon of neglecting the ecological function of cultivated land in various cultivated land quality construction projects: first, unilateral hardening, resulting in more concrete space, less natural science and technology, and loss of habitat for foster wild animals and plants; second, too much emphasis on convenient man-machine access, smooth water flow, quick and quick use of water, dry canals and ditches when no water is used, cutting off the function of the river to conserve all things. Third, one-sidedly emphasized the increase in the area of cultivated land, filled ponds and depressions, dug soil hills and hills, and could not carry out ecological construction in accordance with local conditions, thus cutting off the vitality of wildlife.

In order to promote the quality construction and protection of cultivated land, we must highlight systematicness, integrity, comprehensiveness and cooperation, and establish a working mechanism of "government-led, rural collective economic organizations and farmers as the main body, land construction, departmental participation, overall planning and integration of funds". It is necessary to establish an incentive mechanism, improve the distribution system of newly increased fees, promote the matching between the allocation of newly increased fees and the construction of high-standard basic farmland according to the principle of balance of rights and responsibilities, and explore the establishment of an economic compensation mechanism for cultivated land protection. fully mobilize the enthusiasm of local governments and farmers to participate in land renovation work.