Ministry of Agriculture: there are "two big and two low" problems in the quality of cultivated land in China.

According to Xinhuanet on the 20th, he Caiwen, deputy director of the planting Department of the Ministry of Agriculture, said that the cultivated soil in China has been in a state of sub-health for a long time. There are "two big, two low" problems, such as large degradation area, large pollution area, low organic matter content, low soil fertility and so on.

At the "2015 International Agro-Commercial Brand Development Forum" sponsored by the China Association for the Promotion of High-quality Agricultural products and the China Association for the Promotion of Brand Construction, he Caiwen said that at present, the degraded area of cultivated land in China accounts for more than 40% of the total cultivated land area. the specific table is the thinning of the black land in the northeast, the acidification of the soil in the south and the salinization of the soil in the north. In terms of pollution, the polluted area of cultivated land is large, and the over-standard rate of heavy metals in cultivated land is more than 19%.

"at present, the content of organic matter in China is only 2.08%, which is far lower than the level in Europe and the United States, of which the content of organic matter in the northeast black soil is only 3%, which is significantly lower than the 7% at the beginning of development. In addition, the soil fertility is on the low side. At present, the contribution rate of soil to agricultural products in China is only 20%, which is 20% lower than that of developed countries. The proportion of medium-and low-yield fields in China has reached 70%. " He Caiwen said.

With regard to the causes of the "two big and two low" problems, Zou Guoyuan, a research institute of the Beijing Academy of Agricultural and Forestry Sciences who attended the forum, analyzed that in addition to natural factors, people's overexploitation of soil in recent years and inadequate soil protection are important reasons for the deterioration of soil problems.

"the state should introduce prohibition and incentive measures to reverse the concept of" only using but not nourishing "the soil, and explore the use of economic means to repair and construct the soil." Zou Guoyuan suggested.

He Caiwen pointed out that at present, the Ministry of Agriculture is actively promoting the protection and construction of the quality of cultivated land, carrying out actions to protect the quality of cultivated land nationwide, and promoting the plan of "zero growth of chemical fertilizers and pesticides in 2020." and invest 500 million yuan in the northeast region to protect the northeast black land.