2025High examination geographyHot topic
Twenty-five thousand years ago, you've got a lot of work to do.
06
May
Theme:
Food security has always been the top priority in building a strong agricultural state, as a major geographic proposition for high-level examinations。
Strengthening education in self-food security and raising awareness of food security; developing habits in life that value food, conserve savings and combat waste; and focusing on the agricultural basic research frontier, learning expertise and serving national food security strategies in different areas such as the “tri-farm” policy system, integrated land management, agricultural mechanization and smart agricultural equipment, crop varieties improvement and changes in planting techniques; actively participating in the dissemination of agricultural knowledge, using the agricultural expertise acquired, and providing technical support and guidance to nearby farmers or professional cooperatives to improve the efficiency and quality of food production。
Look at the angle
Changes in location factors for food production
Food security and cropland protection
3. Differences in food problems between regions and their causes
4 food trade and global food security
5Eco-environmentImpact of change on food production。
It's not a good idea
Think logic
Examples
Inner mongolia is one of the main food-producing regions of the country, known as the “silo in the north”, and its arable land is concentrated mainly in the inter-farm zone, mostly low- and medium-yielding agricultural land, with a marked fragmentation. In order to ensure that there is no reduction in the holdings of arable land and in the area of protection of the permanent basic agricultural land, the country has further strengthened the protection of arable land by firmly combating the “de-farmation” of arable land and the “de-foodization” of arable land. The following figure shows the distribution of the mixed agricultural and pastoral zones in mongolia. The following sub-issues have been completed accordingly。
1. The main external effects associated with the lower quality of inland mongolian arable land are (...)
1 wind erosion 2 current water erosion 3 gravity erosion 4 glacier erosion
A. 12b. 13
C. 23d. 24
2. There is a marked fragmentation of arable land in the inter-farm zone of inner mongolia and its impact on agricultural production is mainly ( )
A. Improving mechanization level b. Increasing the difficulty of farming and field management
C. Improving the quality of agricultural products d. For large-scale intensive production
3. The following measures are reasonable in order to guarantee agricultural land and food security in inner mongolia ( )
A. Increasing the cropland reclamation index b. Expansion of cropland to the north
C. Improving cropland management systems d. Promoting the promotion of fertilizers and pesticides
[answers] 1. A 2. B 3. C
1. The inner mongolia region has a dry climate, with less precipitation and much weather. The small particles in the soil are easily blown away by wind forces, leading to a decrease in soil fertility and the sanding of the land, thus affecting the quality of the cropland. Despite the fact that the country as a whole has fewer precipitation, the concentration of rainfall and heavy rainfall during the summer season has resulted in erosion of soil by formation of surface runoff, which reduces the quality of cultivated land and is correct. Gravity erosion occurs mainly in high-lying mountainous areas, manifested in landslides, mudslides, etc. The interior mongolia region has a relatively flat topography, with less significant gravity erosion and three errors. The inner mongolia region has relatively low latitude and altitude, no glacier distribution, no glacial erosion, 4 errors, 12 correct, a correct, bcd wrong. So choose a。
2. The fragmentation of arable land makes it small and scattered, to the detriment of the operation and operation of large-scale agricultural machinery, and reduces the level of mechanization. A mistake; the fragmentation of arable land results in the fragmentation of land, which increases the time and labour intensity of farmers during the farming process, while at the same time making field management more difficult. B is correct; the quality of agricultural produce is mainly related to factors such as soil fertility, climatic conditions, crop varieties and agricultural production techniques, rather than being determined by the fragmentation of arable land, c error; the fragmentation of arable land makes it difficult to achieve large-scale intensive production and d error. So choose b。
3. Inner mongolia, with its high latitudes and limited caloric conditions, there is less potential for improving the cropland replant index, and an excessive increase in the replant index would lead to a decrease in soil fertility, which would be detrimental to sustainable agricultural development. In the northern part of the country, the ecological situation is fragile, and expanding the area northward would destroy the grassland ecological environment and would not be suitable for large-scale cultivation. Improved cropland control systems can detect and stop, in a timely manner, such practices as “de-farming” and “de-foodization” of arable land, guaranteeing both the quantity and quality of arable land, and correct c. Intensive promotion of fertilizers and pesticides, while likely to increase crop yields in the short term, will in the long run lead to problems such as soil slabing, environmental pollution, and impact on agricultural quality and sustainable agricultural development. So choose c。
One to three
In its plant plant plant, xinjiang and the field have built a million acres of desert facilities and agricultural estates, where rice “sheltered up” with vertical, multilayered, earthless space-based and artificial led-photification techniques, using fast-growing techniques, with 15 days of breeding, planting rice seedlings into stereoponsures, takes only 60 days for the entire growth cycle, with an acre production exceeding 1,000 kg. The project was first successfully tested at the chengdu plant in sichuan. The following figure shows the growth environment of rice in the agro-industrial parks of desert facilities. Finish the following question。
1. The key to the rapid growth of rice is precision control as compared to normal rice breeding techniques ( )
A. Heat b. Water
C. Light d. Fertilizer
2. The advantages of building 10,000 acres of desert facilities in xinjiang and fields compared to chengdu are mainly the following ( )
One heat, two days. Long
3 high technology 4 low land cost
A. 12b. 13c. 24d. 34
3. The significance of rice for food security in our country through the application of soilless techniques of multilayered space production is mainly due to (...)
B. Increasing food production
C. Increasing jobs d. Efficient conservation of water and carbon
1. C 2. C 3. B
[ad] 1. The material, known as artificial led photo-refilling technology, is scientifically managed in light formulations to achieve precision light-refilling, significantly reducing the breeding cycle of rice, c is correct; artificial led-refilling technology has no impact on heat, moisture and fertilizers, abd error. So choose c。
In comparison to chengdu, xinjiang and the fields have a long sunbath and low land cost,24 correct. Chengdu's got more heat, more technology, 13 errors. In conclusion, c was correct, abd was wrong. So choose c。
3. It is known from the material that over 1,000 kg of rice acres are produced in the agricultural estates of desert facilities and that their extension will allow a significant increase in food production and guarantee food security. Shortening the crop growth cycle does not improve food quality. Increased employment and efficient conservation of water and carbon are not important for our food security. So choose b。
The nizhi river originates in the southern region of sichuan province, with a tributary at the level of a large crossing, with a dry current of approximately 125. 6 km and a watershed area of approximately 4150. 81 km2. The basin is 667 ~4756 metres above sea level and is tilted north-west from south-west to north-east, and the ecosystem has significant topographic gradients. By the end of 2021, the resident population of the nile river was 61. 34 million, with a urbanization rate of 13. 4 per cent. The figure below shows the change in land use types in the nij river basin from 2000 to 2021. The following sub-issue was completed accordingly。
4. The most likely cause of significant change in the area of arable land within the basin( )
A. Rapid progress in urbanization b. Increased soil erosion
C. Implementation of reforestation projects d. Increased area of waste
5. Changes in land use types may result in river basins ( )
A. Diminishing biodiversity from climate to dry b
C. Large-scale migration to d. Declining food security
4. C 5. D
The reading of the map shows a decline in the area of arable land in the basin; between 2000 and 2021, the area of arable land decreased from about 930 square kilometres to about 780 square kilometres at the highest value, a reduction of about 150 square kilometres, while the area of forest land increased by about 200 square kilometres during the same period. The reduced area of arable land was mainly converted to forest land, due to the implementation of a return to forest, c being correct; by the end of 2021, the local urbanization rate was only 13. 4 per cent, indicating the low level of urbanization, the slow progress of the urbanization process, and a error; the graphic information shows that the increase in the area of forest land was the main trend, indicating that local emphasis on the restoration of vegetation, the erosion of soil should be mitigated, and b error; and the absence of relevant information on the clearing of wasteland could not be judged to exclude d. So choose c。
5. The map, taken together with the above, shows that there has been a decline in the area of arable land in the basin, with a marked increase in the area of forest land over the same period, with a reduction in the area of arable land being converted mainly to forest land, with local small climates becoming more humid, biodiversity increasing, ab being wrong; but no large number of jobs can be provided, no significant migration of people to the country can be attracted, and c is wrong; a reduction in arable land can lead to a decline in food security. So pick d。
