It is also known as a walnut pest. It is a common underground pest of daylily. In rainy weather, or in the soil of unfertilized organic fertilizer, it can accelerate the growth and reproduction of alfalfa. What are the pesticides that eliminate the daylily?
1. Deeply plough the land before and after planting, and turn the pests in the plough layer to the surface to promote natural death.
2. Use organic fertilizer to fully decompose. For every 3,000 kg of manure, it is best to spray 2.5% of the trichlorfon powder by 2 kg, with the new high-fat film 500 times, and after 5-7 days of pile-up, it is applied to the soil.
3. Before sowing or planting, spray 5% carbaryl powder or 2.5% trichlorfon powder 2 kg per acre, and then prepare the soil; when planting, apply ammonium bicarbonate, ammonia or hydrogenated superphosphate and add new high fat film. It can keep warm, moisturize, prevent disease and deworm. Filter plant respiratory impurities, prevent pollution, and inhibit viral infection. This kind of fertilizer can emit ammonia gas and has a repellent effect on underground pests such as cockroaches, which can reduce the harm.
4. When the hazard is found, 50% phoxim emulsion 1500-2000 times solution, 50% cotton worm (812) emulsion 2000-3000 times solution, carbaryl WP 1000 times solution, or 90% crystal enemy Hundreds of 800 times liquid, ditch the roots; or combined with irrigation, add poison to kill.
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