Application And Research Of Crop Barrier Technology

Soil is a nature body due to a long history of soil formation development and gradually formation, also it is the most basic nonrenewable resources. Nowadays with the development of economy and human activities, soil pollution is very serious. The governance of the soil heavy metal pollution has become one of the key projects of environmental protection work in China.This article has selected the ancient emperor village of northwest guangxi area as the object of management, and has taken an encryption survey for the contaminated soil background of the Core demonstration area. The results are as follows:The content of cadmium average extent is 5.5 mg/kg, the over standard rate of the samples is 100%. The average content of soil Pb is 299.8 mg/kg, the over standard rate of the samples is 58%. The average content of soil As is 299.8 mg/kg, the over standard rate of the samples is 72%.This article has taken sample analysis on the grain heavy metal content, such as the local corn, rice and so on. The cadmium and the lead have partly over standard in the corn, while the cadmium, the lead and the arsenic also have exceeded 80% in the rice. The above data has showed that the local agricultural pollution is very serious, longterm consumption will do harm for the human health, so it is urgent to govern the heavy metal pollution. Through the low accumulation of corn screening and low accumulation of rice screening and the low accumulation of kenaf screening, select low accumulation of maize varieties with GY-6, YD-7, RH-11, screening low accumulation of rice varieties with YLY-24, XLY-27, YSZ-41, YLY-10, GY-20, TY8-49, TY9-50, YY-61, YS-62, YX-63 and YY-64.Corn demonstration results:sampling of cadmium and arsenic content in the 12 samples of maize grain has not been limited more than food standards. As an example for demonstration, From project management, economic benefit, ecological benefit and social benefit analysis crop barrier technology application suitability of heavy metal pollution farmland in guangxi, combine the Crop barrier technology further study in the process of local promotion possible problems and puts forward concrete solving plans.