Beijing to control greenhouse nematode chitin significant effect

2004 , 11 on ~ 12 , the Beijing Workstation of the Beijing soil and fertilizer 13 districts of the greenhouse, shed the occurrence of soil-borne plant diseases and insect pests conducted a survey, focus Against the nematodes to investigate the occurrence of disease. Nematode disease in the city’s townships have 20 Yu, nematode disease in the main crop for many crops and Cucurbitaceae Solanaceae crops, cultivation of the general system for the Solanaceae, Cucurbitaceae Or even for these two crops by inverted stubble. Nematode disease in the plot, the yield loss from 5% ~ 50% ranging from serious or even total destruction. In order to better control the nematodes harm , the past two years, the Beijing Workstation of the International Soil Fertility control nematodes on the forefront of technology, application of chitin in the soil to promote the proliferation of actinomycosis , A large number of chitinase, chitinase line can damage the egg wall, the body wall, reaching the objective of combating nematodes, fertilizers contain chitin crop growth and the large number of elements of trace elements, can regulate the soil physical and chemical Characters and microbial flora of the role. City soil and fertilizer production workstation with the actual situation in Beijing, in a lot of room, on the basis of field experiments, from the initial formation of a watermelon, vegetables, nursery, transplanting, the entire process until the harvest nematode control. Add in the matrix in the nursery chitin fertilizer to ensure security matrix disease-free nursery, nurturing seedlings can be achieved, increasing the resistance of seedlings purpose. Transplanting before colonization, chitin, such as disease prevention effects of the drug fertilizer blending with the base fertilizer after the end of Oxfam, the destruction of eggs can reach the wall, body wall, reduce soil nematodes base, the root of the number of purposes. In the protection and application of chitin, lime nitrogen, and other medicinal function of fertilizer, to a large extent reduce the amount of chemical pesticides, the nematode disease has good effects, but also improve Rhizosphere microecosystem area of the composition. Shi use fertilizer for Disease Control nematodes, the first year can reduce the incidence of 40 %, production increased 45 %, obviously the quality of Improve the second year can reduce the incidence of 60 %, production increased 32 %, microbial flora significantly improved.