Spinal Rod & Screw System,Polyaxial Pedicle Screw,Monoaxial Spinal Screw,Pedicle Set Screw Changzhou Ziying Metal Products Co., Ltd , https://www.ziyingmetal.com
Corn borer prevention
Corn borer mainly harms corn, sorghum, millet, rice, cotton, sunflower, pepper, hemp and other crops. Adult corn borer lays eggs on the back of corn leaves. The newly hatched larvae eat young leaf meat. Most of the larvae in the leaf stage of the corn penetrated into the heart and leaves, and most of the larvae before the tasseling were transferred to the tassel and harmed the tassel. After tasseling, the larvae plucked into the stalks and spikes above the ear, and most of the female silking period The larvae feed on the tip of the female ear, some from the top of the spike, into the cob or spike, and some on the stem. The most important stage for corn borer harming corn is the silking period. Drug control of corn borer should catch the heart leaf stage and the panicle stage. 1. At the leaf stage (1), 0.5% 1605 granules are sprayed into the heart leaf at 1 to 1.5 kg per mu. (2) 3% carbofuran granules were sprayed into the heart leaves at 1 to 1.5% of kilogram per mu. (3) 1% carbaryl granules were sprayed into the heart of the leaves at 1 to 1.5 kg per mu. (4) 5% deltamethrin granules are sprayed into the heart of the leaves at 1 to 2 kg per mu. (5) 40% Dimethoate 0.5 kg Bulking slag 200 to 300 kg made of granules, 2 kg per mu into the heart. The cinder has strong adsorption and natural particles. After application, it continuously rolls to the seam along with the growth of the plant, and is distributed in the larvae's living parts for a long time. (6) 50% methamidophos emulsifiable concentrate is made into crusher particles by the above method. Other drugs that are effective against the larvae of P. thimbi can be made into granules as described above. 2. Heading control (1) 2.5% trichlorfon powder Before corn pollination is completed, and the ear is damaged, the powder is placed in a gauze bag (or sock bag), and the powder is protected from the top of the ear to the tip of the ear, per kilogram of powdered powder. About 1600 strains. (2) If the ear has been worm-eaten, 50% of dichlorvos-50g of water and 50kg of water can be used. Injection with a large syringe, 400 can be injected per kilogram of liquid.