Study On The Remediational Technology Of Soil Ecological Environment And The Effect In Facility Farmland

The rapid development of facility agriculture in China plays a great role to promote agricultural industrial structure adjustment and improve living standards of the people in urban and rural areas. But farmers attach importance to yield and neglect quality and negative influence of fertilizer, which has led up to applying fertilizer blindly in a large amount for a long time and destroying of the soil ecological environment in the facility farmland. Then some problems, such as the reducing of the crops' resistance against diseases and the dropping of yield and quality have already aroused great concern from various circles of society. Adopting what kinds of measures to solve those problems concerns agricultural lasting development and the health of people' body and mind.In the thesis, the study was conducted to determine the effects of balancing fertilizer, engineering measures, straw and weathered coal on soil environment, soil fertility, yield and quality of crop in the facility farmland .The pot test, soil test, field experiment and simulated field test were used.The results showed as follows: (1)There was a significant simple relationship between the content of soil organic matter and the wheat straw. The relevant equation in treatments (weathered coal+Straw) was dealt with: Y= 0.23X+18.30 (r = 0.98407*); the relevant equation in the treatments (straw) was dealt with:Y=0.1963X+18.05(r=0.99267**). The soil organic matter in the treatments (weathered coal+Straw) was higher than that in the treatments (straw) correspondingly. (2)The using of wheat straw can increase the total humic acid of the soil . The content of total humic acid in the treatments(weathered coal + Straw) was increased by 23.54%~131.96% than CK1(No fertilizer ), but increased by 2.63%~92.70% than CK2(Sheep dejecta+Carbamide); The content of total humic acid in the treatments (straw) was increased by 21.94%~74.92% than CK1, but increased by 1.42%~45.21% than CK2. The total humic acid gets highest when straw consumption at the 16g/pot, were 0.740% and 0.558% correspondingly. The content of total humic acid in the treatments (weathered coal + Straw) was more than that in the treatments (straw). (3) Balanced fertilization can decrease the soil nutrient accumulation obviously; reduce the soil salt significantly; raise the organic content of soil; regulate soil pH; coordinate the proportion between macronutrient elements and trace elements; promote the activation of soil nutrient; stimulate crops to absorb nutrition, and improve the output and quality of the...