The most headache of planting crops is nothing more than diseases and insect pests, this article mainly introduces the knowledge of insect pests, for insect pests, everyone chooses insecticides to achieve the effect of insecticides, but how much do you know about insecticide selection?
1. Chewable mouthparts pests
When such pests harm crops, they will eat the leaves or other tissues of plants, eat leaves that cause lack of carvings and holes, and eat the leaf flesh in severe cases, leaving only the reticular leaf veins, or even eating them all; some burrow into the leaves to eat the leaf flesh, forming a roundabout tunnel; some bite off the roots or rhizomes of the seedlings, causing the seedlings to wither and die; there are also silk curls, leaves, etc.; mainly including Lepidoptera larvae (such as leaf curls, nocturnidae larvae, etc.), Coleoptera pests (beetles), orthoptera nymphs and adults (locusts, crickets, gray crickets). and hymenoptera larvae, adults; gastrically toxic insecticides are most effective in the control of such pests.
2. Internal intake type mouth implement pest
This kind of pest sucks the young tissue of the plant through the mouthpart, sucks the sap in the tissue, thus causing harm, this kind of pest is its upper and lower jaw needle alternately pierced into the tissue of the plant, sucking the sap, resulting in pathological or physiological damage, mainly aphids, leafhoppers, bugs, insect shell insects nymphs, mosquito adults, thrips, etc.; for such pests, it is advisable to choose insecticides with good suction or good endospiration and good gastric toxicity.
3. Underground pests
Underground pests are omnivorous insects that live in the soil at a certain stage of life or harm the underground parts of plants, seeds, seedlings or near the main stem of the soil surface; there are mainly grubs, ground tigers, crickets, caddisflies and bud maggots, leaf beetles, etc.; for the special parts of the pest, the combination of pesticides and soil particles should be considered when applying medicine. Some pesticides lose their insecticidal effect when combined with the soil, so the choice of insecticide ingredients is critical.
4. Some special pests
In melon crops, if the control effect of fruit fly pests is not good, the tendency of fruit flies to sweet and sour foods can be considered, and a lure agent can be made to control it.
For borer pests, such as the tianniu that harms the branches, the control method is mainly based on high concentration liquid injection, and the drug selection is insecticide with fumigation effect or systemic effect.
In the choice of insecticides, high yield for everyone to produce high yield high chlorothiacillazine, one drug and multiple prevention, broad spectrum and high efficiency; can be used for wheat, rice, corn, fruit trees, cotton, cruciferous vegetables, etc., control wheat aphids, suckworms, armyworms, corn borer, beet nocturnal moths, heartworms, leaf curl moths, night moths, butterflies, fruit-sucking nocturnal moths, cotton bollworms, red age insects, rape insects, etc., for grassland, grassland, dryland crops to control grassland borers, etc.