Soil fumigation is an effective method to control root-knot nematodes and soil-borne diseases. However, there are also individual farmers who improperly sterilize soil chemicals, resulting in failure to effectively control the pests and diseases in the shed. Therefore, the following points should be noted when performing soil fumigation: Operating Lights,Led Operating Light,Operating Room Lamp,Surgical Lamp To Room NINGBO TECHART MEDICAL EQUIPMENT CO.,LTD , https://www.techartmed.com
1, fumigation time should be timely. Soil fumigation should be selected to perform best immediately after the harvest of the previous crop. At this point, root knot nematodes are mostly concentrated on the soil surface and are more likely to be concentrated and killed. Otherwise, other diseases and insect pests will migrate to the deep soil layer and then disinfect the soil, which will reduce the effect. As a result, some germs will have a chance to escape and will happen again in the coming year.
2, drug selection should be appropriate. The soil fumigants that appear on the market include: methyl bromide, cotton wool, chloropicrin, dichloropropene, sulfuryl fluoride, Weibaimu, etc. These agents all have certain control effects on fungi, bacteria, and nematodes, but many All of them are highly toxic and highly toxic products, and they are not safe for humans and animals. Therefore, it is recommended to use high-efficiency, low-toxicity and environmentally-friendly compound liquid soil fumigation disinfectant pesticides such as DiLeil and Abasa.
3, the environmental conditions should be appropriate. Disinfection with soil fumigants, sterilization (insect) mechanism are mostly: after the chemicals are applied to the soil from the original liquid or solid into gas, gas diffusion between the soil particles, killing pathogenic pests in the soil that can cause plant diseases Therefore, it has the effect of preventing disease, so it requires: 1 The permeability of the soil is better. Before soil fumigation, the land to be treated will be turned 20-30 cm. 2 The soil moisture is suitable. In general, soil fumigation has the best soil moisture content of 40%-70%. 3 The soil temperature is reasonable. The ideal temperature can put the pests in a "living" state, making it easier for the fumigant to work. The ideal soil temperature is usually 15 centimeters and 15-20°C.
4, after fumigation to prevent re-infection. The fumigant simply destroys the existing pests in the soil, there is no effective period, and there is nothing to do with reintroducing pests and diseases. After the fumigation, nematodes and other diseases and insect pests were soon discovered, may not be not smoked, but the pests and diseases caused by the recurrence of re-infection, such as seedlings with pests. Some of them are rained into the land with pests and insects, outside the shed and pestle with the lace into the other, these should pay attention to, to cut off the nematode re-introduced channels.
5, after the smoke does not turn too deep: if the soil after the smoke is much deeper than the former soil before the smoke, even before the smoke does not turn over after the smoke deep-flood, will not be dead smoked nematodes and other pests and diseases turned up.
6, add organic fertilizer after smoking: soil disinfection fumigant will not only kill the harmful organisms, but also will kill beneficial organisms, so the disinfected soil in the fertilization aspect to increase the application of bio-organic fertilizer, to supplement the number of beneficial organisms.