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In recent years, agriculture increasingly serious environmental pollution, restricting the sustainable development of agriculture and endanger people's health. Agricultural planting base environmental safety, is to ensure the quality and safety of agricultural origin, and soil and water quality and safety of agricultural products is to determine the important factors. This study investigated and analyzed Nanshao Town, Changping District, Shahe Town, and other 10 towns Machi Town vegetables, strawberries and orchard soil and irrigation water, heavy metals and pesticide residues in composition and distribution; examined each base soil and irrigation water quality of the indicators; according to national standards and relevant industry standards, the quality of the soil into an (excellent), 2 (good), 3 (qualified) and 4 (unqualified) in four levels irrigation water quality is divided into an (excellent), 2 (pass) and 3 (unqualified) in three levels, based on environmental quality of farmland irrigation water quality and soil quality and the evaluation results of calculations, divided 1 (excellent ), 2 (pass) and 3 (unqualified) in three levels, the use of single pollution index method and comprehensive pollution index method for investigating samples of soil and irrigation water pollutant index evaluated to study different areas Changping District and the different functional areas of farmland environmental quality. The main results and conclusions are as follows: (1) the town of Changping District 10 overall environmental quality of farmland integrated pollution index was 0.810, and the overall environmental quality of farmland comprehensive evaluation of a (superior) and clean. Changping District 10 towns 301 soil samples overall comprehensive pollution index was 1.142, the overall evaluation of 2 (good), in line with our environmental technical conditions for green food production, which amounted to a standard (GB15618-1995) of the There are 207, 68.8% of the total number of samples; than two standard (NY/T931-2000) are 83, 27.6% of the total number of samples; up to three standard (NY5010-2002) there are 10, 3.3% of the total number of samples; up to four criteria (failure) have a total sample size of 0.3%. Changping District 43 irrigation water samples overall comprehensive pollution index was 0.194, the overall evaluation of an (excellent), and all irrigation water pollutant index in line with our irrigation water quality standards (GB5084-92), have reached a standards. (2) vegetable base, Changping District, comprehensive pollution index was 0.938 farmland, farmland environmental quality assessment is an (excellent) and clean. Vegetable base 34 soil samples comprehensive pollution index was 1.296, comprehensive evaluation of two (good), which amounted to a comprehensive evaluation standards are 16, 47.1% of the total sample; reach two standards have 16 , 47.1% of the total sample; up to three standard has 2, 5.88% of the total sample, no substandard soil. Vegetable base 10 irrigation water samples overall comprehensive pollution index was 0.273, comprehensive evaluation of an (excellent), all irrigation water pollutant indicators integrated pollution index is less than one, are a comprehensive evaluation, are in line with our irrigation water quality standards, irrigation water is clean. (3) strawberry base, Changping District, comprehensive pollution index was 0.665 farmland, farmland environmental quality assessment is an (excellent) and clean. Strawberry base 224 soil samples comprehensive pollution index was 0.916, comprehensive evaluation of an (excellent), of which there are up to a standard 174, 77.7% of the total sample, up to two standard has 43, accounting for 19.2% of the total sample; reach three criteria have six, 2.68% of the total sample, there is an unqualified, 0.45% of the total sample. Strawberry base 16 samples of irrigation water pollution index is less than one, are a comprehensive evaluation, are in line with our irrigation water quality standards. (4), Changping District, Orchard Farm comprehensive pollution index was 0.920, farmland environmental quality assessment is an (excellent) and clean. Orchard 43 soil samples comprehensive pollution index was 1.316, up two standards, which, up to a standard of 17, 39.5% of the total sample; reach two standards have 24 of the total sample, 55.8 %; up to three standard has 2, 4.65% of the total sample, no substandard soil. Orchard 17 irrigation water samples of each index Pi single factor pollution index and comprehensive pollution index is less than 1, the comprehensive evaluation of irrigation water are one, that is 17 orchard irrigation water are in line with our irrigation water quality standards. The results of this study for the construction of pollution-free agricultural production base to provide a scientific basis; prejudge the soil environmental quality, pre-control; well as the development of soil pollution prevention and control measures, laid the foundation.
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