Prevent pests from harming vegetables

At present, it is the time when a large number of people are transferred to the vegetable fields. This period is also a crucial period for the prevention and control of cockroaches.

Also known as the oil gourd, there are more than 12 species in our province, of which the Chinese giant oyster is the dominant species, as well as the genus Aquila, and the big oystercatcher. In recent years, due to the large amount of straw returned to the field and the lack of attention to the prevention and control of underground pests, the occurrence and harm of earthworms have apparently increased, making this subordinated status a major pest of autumn crops. The foraging habits are very complex. They are adult nymphs that feed stems, leaves, seeds, or fruits of crops. If the cabbage is harmed, light leaves cause nicks, lack of heart, and quality decline. In severe cases, the Chinese cabbage can be harvested. Based on the experience of prevention and treatment over the years, the author summarizes the methods for controlling vegetable fields and rice dumplings as follows:

Set mulching membranes in vegetable nursery or in small vegetable fields. Set a barrier around the mulch. Press the mulch one side (about 5 cm wide) into the soil and the other side with several short sticks (about 40 cm high). This method is simple and effective in preventing and controlling warts.

The bait trap uses 0.5 kg of 90% crystal trichlorfon dissolved in 15 kg of water to make a liquid. The liquid is then mixed with 50 kg of sauteed rice bran, oil cake and wheat bran to make a bait. Trap, kill about 2 kilograms per mu (according to dry materials). Can also be used as straw to put a small pile every 5 square meters, put the bait below, and place 14-15 piles per mu of vegetable, concentrated trapping.

Light trapping utilizes the characteristics of phototaxis, setting up a light bulb beside the vegetable field at night. The light bulb is 30 centimeters from the ground. A large bowl of water is placed under the light bulb to induce the dragonfly to fall into the basin and drown. The next morning the bug body Take a deep burial and it is better to add a small amount of pesticide in the water. Can also be placed professional trap lamp trap.

Dig and kill and dig 3cm 3cm around the vegetable nursery or direct seeding field. The bottom of the pit is slightly larger than the pit. Put fresh cow dung or chicken dung with poison baits in the pit and cover it with fresh grass, which can trap a large number of Adults and nymphs. The next morning can be focused on killing.

Planting traps and belts Crops such as rapeseed are planted around the vegetable field and sprayed with 90% crystals of trichlorfon 300 times after emergence, which can entice salmon to come and feed, thus protecting the vegetable fields.

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