Environmental Quality Evaluation For Green-food Production Base Area Of XinHua And LongSheng Town In HeTao Plain

In this article, according to green food technical guideline for the assessment of the area's environment quality condition and evaluation of soil fertility quality,through field investigation, sampling and chemical analysis in laboratory,we have made environmental quality evaluation for green-food production base area of XinHua and LongSheng town in HeTao plain Inner Mongolia, including soil fertility and potable water. The results are as follows: soil environmental quality belongs to grade one standard(non-pollution level), HuangHe water and thirty percent of underground water for irrigation arrive at grade three standard(light pollution level), seventy percent of underground water reachs grade five standard(severe pollution level) due to arsenic, and air environmental quality is grade one standard. Soil fertility of base area has improved on the whole, and soil humus, whole nitrogen, available phosphorus increase by 25.86%, 31.88%, 75.98% respectively, but available potassium decreases by 35.44% and content of available znic is lower. And potable water for residenter conforms to standard of People Republic of China by survey and evaluation.