In addition to the protection of the field of celery
Recently, serious celery sprouts were found in the celery production shed in the Beijing suburbs. Celery pods, also known as carrot microtubules, harm a variety of umbelliferae such as celery, fennel, and carrots.
Damage characteristics
Insects, such as stalks, leaves, and flower sap, can cause plant growth or wither to death. Celery and fennel seedlings are curled up after being killed. Carrot seedlings often become yellow after being damaged.
Morphological characteristics
There are wings: body length 1.5-1.8 mm, width 0.6-0.8 mm. Live yellow-green, with a thin powder. Head, chest black, belly pale. The veins are normal, and the ventral tube is short, curved, without a grain pattern, and has no marginal projection, less than half the length of the tail piece. The tail piece is conical, and the end of the tail plate is round and without tail pieces.
Wingless crickets: body length 2.1 mm, width 1.1 mm. When live yellow-green to earthy yellow, there is a thin powder. The head is dark gray, and the chest and belly are pale. The back hair is sharp and the antennae are tiled. Abdomen tube smooth, short, curved, no edge and notch, half the length of the tail.
Removal method
1. Before planting, lay a silver-gray membrane on the field or hang a silver-gray membrane strip to repel aphids.
2. Suspended yellow plates to trap winged beaks.
3. It can release ladybugs, grasshoppers and other food insects to control aphids in protected areas.
4. Chemical control. As the locusts have short generation cycles, rapid propagation, and rapid spread, they tend to accumulate in the hidden heart of the Chinese cabbage or the back of the leaves. Therefore, they should use a combination of three functions of contact killing, sucking and fumigation. The aphids can be sprayed with 0.36% matrine aqueous solution and 1% azadirachtin emulsion; if more locusts are on the celery, 25% thiamethoxam water dispersible granules and 2.5% rotenone emulsion can be sprayed and sprayed.
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