Preliminary Report On The Prevention And Control Of Tomato Yellow Leaf Curl Virus Disease By 50 Mesh Insect Net
50 mesh insect net prevention and control tomato yellow leaf curl virus disease
Adopting the technology of "50 mesh insect net coverage + yellow plate warning + timely spraying", the tomato seedlings are neatly arranged, the seedlings grow normally, and the effect of isolating the whitefly is good, and the average hundred seedlings of the whitefly are 12 adults, while the conventional ones The average number of seedlings in the open field was 410, and the number of spraying was 4 to 5 times.
The rate of cultivation of tomato yellow leaf curl virus was 50% in the whole period. The prevention and control effect is over 90%, and the economic loss can be recovered by 6 329.5 yuan per 667 m3. In 2007-2009, the insecticidal nets were used in the tomato production bases of Cangnan, Rui'an and Bohai in Wenzhou to cover and control tomato yellow leaf curl virus disease. The promotion area is over 330 hm2.
Microclimate effect of sunscreen insect nets and its impact on chicken feathers
Sunshade, insect net, microclimate, pest, chicken
The comparative test method was used to obtain the growth and microclimate data of the 16-mesh sunscreen insect-proof net, the open field of the chicken, and the wind tunnel to obtain the wind speed data inside and outside the sun-proof insect net.
The results show that the sunshade insect net has obvious cooling and humidification during the day, weakening the light intensity, reducing the wind speed, preventing insects, reducing the production cost and increasing the output. The result can provide a technical basis for the production of pollution-free vegetables.
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