Investigation and Evaluation of Soil Quality of Vegetable Greenhouses in Shouguang City,Shandong Province——Pro-Soil Online-Big Data Platform for Agricultural Soil Remediation( Part Ⅰ)
JIN Sheng;PIAO Chengchun;SHANG Zhaocong;DUAN Lulu;QI Zhaoying;Jinyouli Ecological Agriculture[Shanghai] Co.,Ltd.;Shanghai Research Institute of Chemical Industry Co.,Ltd.;Soil Health Branch of CCEMA;
The greenhouse vegetable is a very important agricultural product in China. However, some improper farming operations and long-term continuous cropping may lead to a series of vegetable greenhouse problems such as reduced soil tilth, serious pests and diseases, and agricultural non-point source pollution, which affect the sustainable development of vegetable greenhouse industry. In order to better understand the soil quality of vegetable greenhouses and provide targeted green, environmentally-friendly and economic soil management method, a comprehensive evaluation and classification is conducted including soil physical and chemical properties, fertility status, heavy metal and organic pollution condition, pests and diseases condition in selected typical vegetable greenhouses in Shouguang City, Shandong Province. The research results show that the soil physical properties of the cultivated layer(0-15 cm) are good, but the deep soil(15-45 cm) is liable to form a plow pan, which leads to the deterioration of the plant root growth environment; in cultivated layer the chemical nitrogen, phosphorus, and potassium content exceed the standard seriously, and there may exist excessive fertilization. The use of a large amount of chicken manure also has caused the soil to be weakly alkaline. There is no pollution of heavy metals and organic matter, and the plant diseases and pests are mainly root-knot nematodes. Through investigation and analysis, the main limiting factors of cultivation process in the target vegetable greenhouses, and their contribution to continuous cropping obstacles are identified, which provide basis for targeted soil improvement.