How to control diseases and insect pests in mountain lily
Botrytis cinerea, anthracnose and blight are common diseases in Liliaceae. If it is not prevented in time, it will lead to a reduction in production.
The main results are as follows: (1) Botrytis cinerea, also known as leaf blight, belongs to semi-known fungi. It mainly occurs on stems, leaves and flowers, which often harms the tip of young leaves and makes the growth point of the stem soft and rotten. If it occurs in the leaves, yellow or reddish brown spots will be formed, and the periphery is flooded. The weather is humid and the disease department produces gray mildew. Prevention and treatment: at the initial stage of the disease, spray 1V 150 times Bordeaux solution or mancozeb 600 times 800 times, spray 2 times continuously for 3 times.
(2) anthrax is a semi-known fungus, which mainly infects leaves, flowers and bulbs. The disease occurred in the leaves, resulting in oval, light green, surrounding yellowish-brown spots and central depression. Bulb disease, the lateral scales produce reddish irregular spots, the boundary between disease and health is obvious, and then the spots become dark brown and sclerotic. Prevention and treatment: choose disease-free bulbs as seeds, and disinfect the planted bulbs. The disease in the field can be irrigated with 1000 times of carbendazim.
(3) Phytophthora is also a kind of fungal disease. Can impregnate leaves, stems, flowers, bulbs. Stem damage, the emergence of water-stained light brown disease spots, gradually upward and downward expansion, resulting in stem rot, leaf withering and death. When the disease is serious, the flowers, stem bases and scales can be killed, resulting in the destruction of the whole field, and the disease is serious in the hot and humid season. Prevention and treatment: spraying 25% Ruidu 800 times liquid at the initial stage of the disease, and then spraying metalaxyl manganese zinc, Yimaoling and other agents, the cross-use effect is better.
(4) the main pest of mountain lily is aphid. Aphids often gather on tender leaves and flower buds to draw juice, resulting in stem atrophy, poor growth and affected flowering and fruiting. Spraying 40% dimethoate emulsion 800-1000 times during the occurrence period has an excellent control effect.
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How to manage the field of mountain lily
The main results are as follows: (1) loosening soil and weeding is carried out once or twice every spring, when the plant grows and closes, it can not loosen the soil and weed, and the plant life can be prolonged by shading and cooling with weeds. (2) topdressing pressing a layer of cover dung on the bed every autumn can play a role in heat preservation. In spring, the loose soil is turned into the soil to play the role of topdressing. When it is found that the leaves are yellow and thin in summer, 0.2% potassium dihydrogen phosphate, 1% urea or 0.1% ammonium molybdate should be sprayed on the leaves. (3) the field of bud production is to promote the bulb.
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How do mountain lilies reproduce
The main results are as follows: (1) the seeds are propagated and harvested in September, dried and threshed in the sun and set aside. In the middle and late April of spring, the seeds were sown on the bed according to 20 cm row spacing, covered with soil 2 cm, slightly suppressed, covered with grass curtain, often watered and moisturized, and removed after emergence. (2) when the bulbs were propagated and harvested, the bulbs on the disease-free plants were collected, soaked in 500 times of carbendazim or carbendazim aqueous solution for 30 minutes, and then sowed according to the row spacing of 20 cm x 5 cm. In a year, some of the bulbs reach the species.
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