The early seedling of lily must be managed early.

The temperature was on the high side last winter, and the lily seedlings emerged earlier this year than in previous years. In Xinshao County, the lilies began to emerge in early March, about half a month earlier than in previous years. At present, underground pests have begun to harm, the aboveground stems and leaves of the injured plants are yellow, the growth is slender and thin, and the tender stems are purplish red. Peeling off the soil layer, it can be seen that the bottom layer of the seed bulb is rotten or completely rotten, and there is no root system or the root system is bitten off. If lily seedlings emerge early, field management should keep up with them accordingly.

At present, root mites, grubs, ground tigers and so on are harmful to lily underground stem and root system in early control of underground pests. Root mites: generally parasitic in groups in lily bulbs, making scales rot and leaves withered and yellow. Grub: the larva of a beetle. It harms the root or rhizome of the plant, and the injured part shows a neat incision. Causing the seedlings on the ground to turn yellow. Ground tiger: harm to roots, seed stems, roots and young seedlings, resulting in lack of seedlings. In addition, there are underground pests such as golden needle worms, nematodes, termites and so on. Prevention and treatment: use 1000 times of acephate per mu (or 800-1000 times of 50% marathon emulsion) The roots were irrigated with 800 × 1000 times of malathion, 1000 times of phoxim, 800 × 1000 times of thiophanate (or 800 × 1000 times of thiophanate) and 800 times of 20% dicofol. Mirex can be used to control termites and nematodes can be used to control nematodes. If the underground pests are seriously harmful, the available solution can be irrigated twice. Medium ploughing and loose soil topdressing can increase soil temperature and enhance soil permeability. Weeds should be picked up to prevent resurrection after rain. Combined with the application of thin human dung water (2kg urea per mu). In the first ten days of April, 45% compound fertilizer or 100kg cake fertilizer was applied per mu between rows.

Qinggou leached lily is a dryland crop, which is not resistant to hypoxia and is easy to occur in the case of poor soil waterlogging and permeability. Therefore, do not trample on the fields on rainy days and after rain, so as not to stabilize the soil and make the bulbs rot. Since there is a large area of accumulated rain on the hillside, attention should be paid to opening or dredging flood control ditches to prevent running water from rushing directly into the lily land. Deepen the perimeter ditch and the main ditch, often clear the ditch and drain, and reduce the humidity in the field. After adjusting the emergence of the plant, we should pay attention to the inter-seedling, leave one strong seedling per plant, and remove the remaining tillers in time. When the height of the plant is 40 cm, the heart is removed so that the aboveground part is controlled at about 45 cm. Topping on a sunny day is conducive to wound healing. After the bud appears in late May, the bud should be removed in time.

The control of aboveground disease and insect blight is the main disease at the seedling stage, and the disease is common. After the seedling is damaged, the rhizome turns brown and constricts and collapses and dies. After the adult plant was damaged, the leaves turned yellow from the bottom up, so that the whole plant became yellow and withered and died. After emergence, 50% carbendazim 1000-fold solution was sprayed 2 times for 3 times, the diseased plant was removed after the disease, and the disease area was disinfected with 50% lime milk. Leaf blight: also known as gray mold, mainly harms leaves. The disease spot is round or oval, inconsistent in size, light yellow to light reddish brown. At the initial stage of the disease, 50% Sukeling 1000 times solution is sprayed 2 times 3 times, 5 times every 7 days. Epidemic disease: after the disease, the leaves seem to be scalded to death in boiling water, and the disease occurs rapidly in high temperature and humidity weather conditions. At the initial stage of the disease, 40% ethyl phosphate aluminum was sprayed with 2000 times solution or 25% metalaxyl solution with 1000 times solution. Virus disease: the main symptoms are mosaic, plant cluster shrinkage, leaf shrinkage and so on. At the initial stage of the disease, aphid lice Jing was used to control aphids, and on this basis, the healthy plant was sprayed with virus an or Shiduqing.