Key points of garlic Management in the critical period of yield formation in the Middle and late stage

1. Clearing ditches and regulating soil moisture: after a long growing period and field management, the drainage and irrigation function of most gully systems in the field decreased, and with the arrival of the rain period, especially in the middle and later stages of garlic growth, Rain Water increased, and waterlogging was easy to occur in the unmatched plots of the gully system, affecting the growth of garlic. Do a good job in clearing ditches and regulating soil moisture in garlic fields to ensure the matching of "three ditches", so that drought can be irrigated and waterlogging can be drained, rain can stop the fields dry, and rain and waterlogging can be prevented.

Fertilization of garlic

Second, water management: as garlic enters the critical period of water demand, coupled with the increase of air temperature and windy days, the water demand of garlic increases, so we should pay attention to garlic water management and irrigate garlic inflated water once. For some high-pitched areas, appropriate amount of water should be replenished by means such as motor wells to ensure the water demand of garlic expansion.

Third, supplementary fertilizer: the period from the elongation of garlic stalk to the expansion of garlic is the key period of fertilizer absorption. Due to the different levels of fertilization, there is a significant difference in the growth of garlic in the field, and the garlic leaves in some fields turn yellow and grow thin, so fertilization measures should be taken. First, combined with irrigation and fertilization, 15 kilograms of urea is applied per mu; second, 0.5% urea solution, 0.3% potassium dihydrogen phosphate solution and other organic foliar fertilizers are sprayed; third, in the initial stage of garlic expansion, 200 milliliters of allicin is sprayed with 40 kilograms of water per mu.

Fourth, control diseases and insect pests: garlic is prone to leaf diseases such as soft rot, leaf blight and rust in the middle and later stages of garlic growth. Among them, soft rot is a bacterial disease, yellow-white stripes run through the leaves of garlic, when the humidity is high, the disease is yellowish brown soft rot. Prevention and treatment of the disease, in the early stage of the disease, early spraying copper hydroxide, succinic acid copper, and so on. Leaf blight often occurs at the tip of the leaf, initially showing small white dots of flowers, irregular or oval gray to gray brown spots after expansion, with black mildew attached. Prevention and treatment of the disease, timely drainage after rain, in the initial stage of the disease, timely spraying chlorothalonil, metalaxyl manganese zinc and other fungicides. Brown protruding spots often appear in the part of rust disease, and orange-yellow powdery matter is scattered after the epidermis is ruptured. Prevention and treatment of the disease, to prevent flooding, in the early stage of the disease, timely spraying triadimefon and other drugs.

Fifth, timely harvest: first, timely harvest of garlic bolts. Garlic, which is mainly harvested from garlic, is harvested when the garlic stalk grows 15~18cm, bends like a scale hook, the bolting bud expands obviously, and the color changes from green to white. The second is to harvest garlic at the right time. Sold with dried garlic, the leaves at the base of the garlic are dry, the pseudostem is soft, press hard to one side, harvest when there is toughness, and generally harvest about 20 days after bolting. The harvest time of fresh garlic is generally 5-7 days earlier than that of dried garlic, in order to maintain the crisp and tender quality.