Comparison of soil and plant characteristics in organic, integrated and conventional cultivation patterns of vegetable production

The comparative experiments indicate that the application of organic fertilizer can promote the plant growth, increase the vegetable yield and improve the physical and chemical characters and fertility of soil. By using the organic and integrated cultivation patterns, the contents of organic matter, total N, available K in the soil are 48.5%，25.4%，130.1% and 5.1%，4.3%，81.6% higher than those by using the conventional cultivation pattern. The study on tomato shows that the vitamin C, sugar and soluble solid contents of the plant in the organic pattern are 11.9%，14.1% and 3.9% higher than those in the conventional pattern. The study on celery shows that the vitamin C, sugar and soluble solid contents of the plant in the organic pattern are 11.2%，12.5% and 43.8% higher than those in the conventional pattern. The nitrate contents of the plants in the organic and integrated patterns are 30.6% and 25.9% lower than those in the conventional pattern.