1) Based on the systematic study of the occurrence, distribution and damage patterns of farmland weeds in Anhui, Jiangsu and Gansu provinces, combined with a general survey of nearly 20 provinces and cities across the country, we have clarified the occurrence, distribution and damage of weeds in the middle and lower reaches of the Yangtze River. The composition, occurrence and distribution characteristics of farmland weeds and their quantitative ecological relationship with farmland ecological factors. A new concept of weeds and its explanation were proposed, and the zoning of Chinese pastoral weeds was proposed; the study proposed that farmland weeds are a complex composed of manifest weed communities and latent weed communities, and controlling the farmland weed community complex will achieve Sustainable management of weeds. Through experiments, a sustainable management technology system for weeds in rice-wheat rotation fields using biological interactions and "green ecological weed control" through engineering technology and ecological approaches has been successfully promoted in test plots and on the surface. It can be promoted and applied as a new grass control mode. A set of quantitative investigation and research methods for weed distribution and damage was explored, that is, a seven-level visual weed damage survey was used, combined with quantitative analysis methods. Responsible for the establishment of China's weed and specimen network information service system. Scientific and technological achievements identified by the Ministry of Education: 360-02-10970521-01
2) Curvularia teffensis was isolated and its potential to be developed as a fungal herbicide for the control of grass weeds such as crabgrass was systematically studied. . The biological herbicide Disancu has been developed and has achieved up to 90% field test results. Its results have matured to the pilot level and are expected to be developed into commercial biological herbicide products in the next 3-5 years. First, an Alternaria strain was isolated from Eupatorium adenophora, and the study found that its mycelium has a strong ability to kill the weed Eupatorium adenophora; a new mycotoxin AAC was discovered, which was found at 30ug/ml The following has high activity and can kill the main monocotyledonous and dicotyledonous weeds in farmland. Its mechanism of action is to inhibit photosynthesis. Firstly, the colloid Colletotrichum sporocarpa specialized type was isolated and its potential as a fungal herbicide to control Persian spores was systematically studied. Obtained 3 patents and applied for 2 patents.
3) Conducted in-depth investigation and research on exotic weeds across the country and proposed a list of the most diverse exotic weeds in China; proposed a continuity-based evaluation method for the weediness of exotic plants; systematically Research work has been carried out on the molecular ecological adaptation and comprehensive control of the alien invasive weed Eupatorium adenophora. By studying the affinities between genetically modified crops rice, rapeseed and related species, an evaluation method for evaluating the safety of genetically modified crops based on the evaluation of compatibility was proposed.
4) 8 practical research results have been completed. Among them, there have been the development of Lingda dosage forms and formulas, the one-time compound herbicides detrituron and meturon in wheat fields, and the transformation of technological achievements in natural herbicide synergists. The development technology of disposable herbicide series products for lawn stem and leaf treatment has also been transformed and promoted to nearly 20 provinces, municipalities and autonomous regions across the country, covering an area of ??tens of millions of square meters. Obtained 1 patent.
5) He has won 6 scientific research achievement awards from provinces, cities and societies. More than 130 papers have been published. 7 monographs and textbooks.