In 2015, the area of first and second class land in Tongnan Distdct of Chongqing was 221.646 km2, accounting for 30% of the total cultivated area, and the area of the third, fourth and fifth class land was 517.861 km2...In 2015, the area of first and second class land in Tongnan Distdct of Chongqing was 221.646 km2, accounting for 30% of the total cultivated area, and the area of the third, fourth and fifth class land was 517.861 km2, accounting for 70% of the total cultivated area. The quality of cultivated land was at a low level. Comparison with the Second Soil Census in 2015 showed that the soil pH value has been improved; the organic matter content in the tillage layer showed a slight upward trend; the contents of available nitrogen, available phosphorus and available potassium in the topsoil increased. Countermeasures were proposed as follows： vig- orously promote the construction of high-standard farmland; adjust the industrial structure of agriculture and implement farming reform; combine organic and inorgan- ic fertilization to reduce the amount of fertilizers; popularize soil testing and formu- lated fertilization to change farmers＇ traditional fertilization habits; improve pollution control to ensure the sustainable productivity of farmland; strictly promote the quality management of cultivated land and strengthen the construction of quality monitoring system; increase investment and improve the monitoring mechanism; vigorously publicize and enhance the awareness of all citizens in protecting cultivated land; im- prove the law of cultivated land protection and enhance the seriousness of the law on the protection of cultivated land.展开更多
文摘In 2015, the area of first and second class land in Tongnan Distdct of Chongqing was 221.646 km2, accounting for 30% of the total cultivated area, and the area of the third, fourth and fifth class land was 517.861 km2, accounting for 70% of the total cultivated area. The quality of cultivated land was at a low level. Comparison with the Second Soil Census in 2015 showed that the soil pH value has been improved; the organic matter content in the tillage layer showed a slight upward trend; the contents of available nitrogen, available phosphorus and available potassium in the topsoil increased. Countermeasures were proposed as follows： vig- orously promote the construction of high-standard farmland; adjust the industrial structure of agriculture and implement farming reform; combine organic and inorgan- ic fertilization to reduce the amount of fertilizers; popularize soil testing and formu- lated fertilization to change farmers＇ traditional fertilization habits; improve pollution control to ensure the sustainable productivity of farmland; strictly promote the quality management of cultivated land and strengthen the construction of quality monitoring system; increase investment and improve the monitoring mechanism; vigorously publicize and enhance the awareness of all citizens in protecting cultivated land; im- prove the law of cultivated land protection and enhance the seriousness of the law on the protection of cultivated land.
