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Soil disinfection technology to solve the problem of lily continuous-cropping obstacles

Recently, it was learned from the observation meeting on lily soil-borne disease prevention and control supporting technology and experimental demonstration site in Shaoyang, Hunan that the Institute of Plant Protection of the Chinese Academy of Agricultural Sciences applied soil-borne disease prevention and control technology with soil disinfection as the core to increase the yield of Longya lily in the nearly-unavailable continuous cropping field, with a yield of almost 40,000 kg per hectare.

According to researcher Cao Aocheng, soil-borne diseases such as lily wilt, Lily anthracnose, and other severe soil-borne diseases have caused serious problems with continuous lily cropping. Generally, the interval between wet and dry cropping is more than 3 years, and the dryland rotation requires more than 8 years.

To replant lilies. Soil disinfection precision pesticide application machinery is an innovative technology in the soil disinfection industry, and its large-scale promotion and application can solve the problem of high-added value crop continuous cropping obstacles. The soil pest control innovation team of the Institute of Plant Protection, after years of continuous research and tackling key problems, has developed a "lily soil-borne disease prevention and control supporting technology system".

In view of the application technology of different material forms of fumigants, the technical regulations for soil disinfection of different fumigants have been formulated; standardize the industry standards of fumigation technology in drug storage, application technology, special machinery, tool maintenance, etc.; develop fine application machinery, such as the self-propelled fine rotary tillage application machine that uses the solid fumigant Dazomet and the electric spray injection applicator that uses liquid fumigants such as chloropicrin and metham, and the fine-rotation soil flame insecticidal machine suitable for organic agriculture has finally solved the technical bottleneck of high-volatility fumigant with the high-efficiency application. Among them, the self-propelled fine rotary tillage pesticide applicator has a rotary tillage depth of 40 cm, which can not only solve the problem of uneven manual spraying of pesticides. Moreover, at the same time as the pesticide application, it can also return straw to the field and break soil compaction. This technical system promotes the efficient and safe use of fumigants, improves the social service level of soil fumigation, and solves the problem of technology application and promotion.

At present, this technology has been demonstrated in local lilies, such as Lilium brownii var. viridulum, Lilium lancifolium, LiLum davidi var unicdor cotton, and has achieved good results after large-scale application. It is expected to solve the problem of continuous lily cropping obstacles.

Source: www.caas.cn


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