First, the danger of golden needle Worm is a kind of underground pest, slender body slightly flat, body wall is hard, golden or brown, and shiny, hence the name "goldworm", the adult is a beetle, is a Coleoptera. The golden worm larvae bite on the newly germinated seeds of the wheat, the roots of the seedlings, and the victim's incomplete bite, and the irregular fracture-like tear is an important diagnostic basis.
Second, the living habits of golden needles Golden needles easy to live in the straw and poor maturity and management of extensive farming plots, adult or larvae in the soil in winter. The golden worms have completed one generation in 2-3 years, and are seriously endangered in the post-autumn wheat seedling period and early spring returning to the green period, especially in the early spring. The activity of the earthworm is strongly affected by the temperature and humidity conditions. Vertical movement is performed according to the temperature and humidity changes of the soil. When the soil temperature is 10°C deep, the soil temperature rises to 6°C and the soil temperature rises to 10°C to 20°C. Real and seedlings. Spring rain increases the damage.
III. Prevention and control methods 1. Agricultural control creates an environment that is not conducive to the activity of golden worms. Deep plowing before planting, deep plowing after harvest; Summer plowing, especially timely plowing after wheat harvest can kill part of the pests, the use of adult phototaxis of adult adults, in the field of adult insecticide traps set in the field to kill the adult .
2, chemical agents can be used to prevent seed dressing, poisoning soil and irrigation roots and other methods. 40% methylisothiphos EC and 48% chlorpyrifos (Lesbourne) can be used for seed dressing; soil treatment can use 20% methylisothiphos EC 200-250g/mu, 5% phoxim granule 2.5A/mu 3 kg, 25 kg of mixed fine soil before planting sowing of arable land or along the ridge; before the winter and wheat returning green period found dead due to the damage caused by the golden needle, to early irrigate. Available 40% phoxim 100 ~ 150 ml watered 50 ~ 75 kg of liquid preparation.
surgical mask,medical mask,KN95 respirator,ffp2 respirator,3-ply surgical mask tie-on,meidcal protective respirator
Shandong Zhushi Pharmaceutical Group Co.,LTD , https://www.sdzs-medical.com