Multi-pronged control of tomato root knot nematodes

It can be rotated for 2 to 3 years to reduce the amount of root knot nematode in soil. Severe disease fields and grass crops have a good crop rotation effect, especially for paddy-upland rotations. Soilless cultivation of tomato not only eliminates the source of insects, but also reduces the occurrence of soil-borne diseases.

Improve ground temperature and soil disinfection. In greenhouses, 15,000 kilograms of wheat straw or straw is used per hectare, and then plowing, paving, irrigation, and then sealing the greenhouse for 15 to 20 days. Replant the decomposed organic fertilizer, increase phosphorus and potassium fertilizers, and increase plant resistance to disease. The basal fertilizer was added with lime, and the leaves were topped with superphosphate infusion.

Disposal of the diseased plants in the field, digging, deep-buried or incineration.

Before the planting, the ditch is applied directly with 5% butyl thiocyanide granules 75-105 kg per hectare, or spread with 3% Milur granules in the planting hole. After application, spread with wet fine soil and spread it on the ridge in the ridge, transplant it after covering the soil.

In the tomato growing stage, 15% of avidin sulfur microemulsion can be used, 1.12~1.69kg/ha, or 37.5~45kg/hectare of P. lilacinus, 500 million viable spores/g, to irrigate or sprinkling. The spray was sprayed every 7 to 10 days. The above-mentioned agents were used alternately, and the roots were continuously irrigated 2 to 3 times.

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