Question ** Ideas:
1.Understand the meaning of "storing grain in the ground".
2.Analyze the reasons for the strategy of "storing grain in the ground".
3.Analyze the case of "storing grain in the ground" in history and reality.
4.Put forward a feasible plan for the local "grain storage in the ground".
Question 1:
1.What is the difference between the emphasis of grain reserves of "storing grain in the ground" and "storing grain in warehouses"?
2.Judging from the factors that determine the total grain output, under the premise that the red line of 1.8 billion mu of cultivated land has been demarcated, what is the key to "storing grain on the ground"?
Analysis: 1According to the knowledge learned, from the perspective of grain production and storage processes, there are the following three differences: First, the reserve objects are different.
"Storing grain in warehouses" emphasizes the actual grain output of cultivated land, and "storing grain in the ground" emphasizes the grain production capacity of cultivated land. Second, the input links are different. Both "storing grain in warehouses" and "storing grain in the ground" need to be invested in grain production, storage construction, and storage maintenance, and "storing grain in the ground" is mainly invested in improving the quality of cultivated land. Third, the additional benefits are different. The grain reserve system of "storing grain in warehouses" has generated huge inventory pressure and financial burden on storage, and produced a large amount of aged grain, resulting in food waste. The focus of "storing grain on the ground" is to maintain the productive capacity of cultivated land, and it is possible to change the planting of cash crops in years when the grain supply is sufficient to increase the economic returns of peasants, and it is also possible to readjust the planting structure and restore grain production through ecological pressure through fallow and crop rotation and other means.
2.According to what we have learned, the land produces grain, and the peasants cultivate the land. The absence of land, the barren land, and the contamination of the land will seriously affect food production. The key to "storing grain on the ground" is to protect and improve the quality of cultivated land and ensure sufficient grain production area. Through policies and scientific means, we should let degraded cultivated land recuperate, ensure and improve the productivity of cultivated land, and strive to increase the yield per unit area of cultivated land.
So the answer is:1"Storing grain in the ground" emphasizes sustainable grain production capacity and long-term interests, while "storing grain in warehouses" emphasizes grain reserves and takes into account short-term interests.
2.The key is to protect and improve the quality of cultivated land; Let the degraded cultivated land recuperate, ensure and improve the productivity of cultivated land, and strive to increase the yield per unit area of cultivated land.
Material 2 Question:
1.What are the favorable conditions for China to implement "storing grain on the ground"?
2.What is the role of "storing grain on the ground" to solve the contradiction between ensuring food security and the quality of cultivated land?
3.How to understand the significance of "storing grain on the ground" to solve the contradiction between the cost of grain reserves and the stable supply of grain?
Analysis: 1According to the material information, "since the late 90s of the 20th century, there has been no shortage of grain supply in China on the whole", it can be seen that in recent years, China's grain production has increased year after year, agriculture has developed steadily, and there has been no shortage of grain supply; With the development of China's social economy, the level of agricultural technology has been continuously improved, and the cultivation of improved varieties has continuously increased the grain yield and grain output. With the improvement of people's living standards and the rise of income levels, people's food structure has changed, resulting in a decline in food demand.
2.According to the knowledge learned, the land produces grain, the peasants cultivate the land, there is no land, the land is barren, and the land is polluted, which will seriously affect the production of grain; Through "storing grain on the ground", the state can improve the quality of cultivated land and protect cultivated land, thereby increasing the grain yield of cultivated land and ensuring food security to a certain extent.
3."Storing grain on the ground" has the following significance to solve the contradiction between the cost of grain reserves and the stable supply of grain: Reduce the cost of reserves: Storing grain underground or underground, compared with traditional grain storage facilities (such as warehouses, warehouses, etc.), can reduce the cost of reserves; Improve the stable supply of grain: by storing grain on the ground, we can maintain a long-term stable supply of grain; Alleviate the seasonal pressure of grain: agricultural products have the characteristics of productive production, often abundant in the harvest season, but in the non-harvest season, in short supply, therefore, "storing grain on the ground" by reducing the cost of reserves, providing a stable supply of food and responding to emergencies, to solve the contradiction between the cost of grain reserves and the stable supply of grain, which is of great significance to ensure food security, stabilize the agricultural product market, and ensure national food.
So the answer is:1In recent years, China's grain production has increased year after year, and agriculture has developed steadily; social and economic development, the level of agricultural technology has been continuously improved, and the grain yield has been continuously improved; The improvement of living standards, changes in the structure of food, leading to a decline in food demand, etc.
2."Storing grain on the ground" can improve the quality of cultivated land, protect cultivated land, thereby increasing the grain yield of cultivated land and ensuring food security to a certain extent.
3.To a certain extent, "storing grain in the ground" can reduce the total grain output, reduce the amount of grain reserves, reduce the cost of grain reserves, and help balance the contradiction between grain supply and demand.
Material 3 Question:
1 What is the significance of traditional Chinese farming culture for "storing grain in the ground"?
2 Among the cases of modern cultivated land quality improvement, two cases were selected to illustrate the relationship between the local cultivated land quality improvement mode and the characteristics of natural environment and cultivated land resources.
Answer: 1 Traditional Chinese farming culture embodies the wisdom of the East, which is mainly reflected in the following three aspects:
The first is the understanding of the relationship between the use and protection of cultivated land. China's ancient agricultural production system embodies the active adaptation to nature rather than blindly confronting nature or passively responding to nature, and pursuing the sustainable use of cultivated land.
The second is to take measures to improve the quality of cultivated land according to local conditions. Each measure is aimed at a specific problem of cultivated land quality and is tailored to local conditions.
third, compared with modern agricultural production, what aspects have been inherited and are still playing a role; What aspects have been abandoned and should be re-emphasized.
2 (1) Black soil protection in Jilin Province. The cultivated land in Jilin Province is concentrated and contiguous, the black soil is widely distributed, and the wetlands and grasslands are more distributed. Therefore, the improvement of cultivated land quality is mainly aimed at the problems of long-term high-intensity grain planting and excessive reclamation in some areas, and measures such as rotation tillage, fallow or returning farmland to forest, grassland and wetland are taken to continuously manage the area.
2) Salinization control in the Huang-Huai-Hai region. The Huang-Huai-Hai region is in a temperate semi-humid region, with many sunny days and vigorous evaporation; The terrain is relatively low and flat, and the groundwater level is high. The irrational irrigation method in agricultural production can easily lead to secondary salinization of the soil. Therefore, the degree of salinization of cultivated land is high and the quality is low. In view of these characteristics, the improvement of cultivated land quality in this area is mainly to regulate and control the movement of water and salt in the soil.