When do cantaloupes usually grow? Attached pest control techniques

Hami melon is one of Xinjiang's characteristic fruits, because the light is particularly sufficient, the Hami melon meat is more, sweet taste. Now there are many planting, varieties are also very many, basically all the year round. What time does Hami melon usually grow? Pest control techniques attached.

What time does the melon usually grow?

On the whole, Hami melon to plant well, but also to timely sowing, generally should master in the late frost after the soil surface 10 cm deep temperature stability at about 14℃ can be sown. The melon field covered with plastic film can be sown around April 20. If plastic film is not used, the sowing date can be moved back appropriately. For winter melon prepared for storage, the sowing date can be delayed to about May 20.

II. Control techniques of Hami melon diseases and insect pests

1. Hami melon blight

Harm symptoms: the typical symptoms of the disease is wilting, in Hami melon throughout the growth period can be disease, seedling disease, cotyledon wilting or whole plant wilt, was damping-off. After flowering and fruiting, the leaves of the diseased plant gradually wilted, like water shortage, more obvious at noon, and could recover in the morning and evening. After a few days, the leaves of the whole plant were brown and withered, and could not recover to normal. The leaves dried up and the whole plant died. Disease root brown rot, slightly constricted, stem base longitudinal crack, crack sometimes overflow amber jelly, will disease stem longitudinal cut, visible vascular bundle was yellow brown.

Control methods: cultivation management: to strengthen the cultivation management methods based on crop rotation.

One is to select disease-resistant varieties, reasonable irrigation as the center, chemical control as the auxiliary comprehensive control method. Second, crop rotation for 2 ~3 years, preferably summer crop land. Third, control the amount of nitrogen fertilizer, increase the application of phosphorus, potassium and trace elements.

Chemical control: seedling disease is the use of chemical control, found sporadic disease plants, with 30% transplant Ling + Ayman (seaweed fertilizer) irrigation roots, 0.2 kg of liquid medicine per plant, and foliar spraying fulvic acid leaf fertilizer, the effect is obvious.

fruit spot

2. Hami melon hazard symptoms

The disease spots on the leaves were round to polygonal, the edges were initially V-shaped water stains, and then thinned in the middle, and the disease spots dried up. The back of the lesion overflowed with white pus, showing a thin layer after drying, and shining. Severe when a number of spots fused into a large spot, dark color, more brown to black brown. Fruit disease, first in the fruit upward on the epidermis is water-like small spots, gradually brown, slightly sunken, late more cracks, brown. At the beginning of the disease, it was only limited to the pericarp. After entering the middle stage of the disease, the pathogen could expand to the pulp alone or with saplings, making the pulp become water-stained and rotten.

Control methods: 1. Select disease-resistant varieties, such as Xiyu series and Ganmibao.

2. Select disease-free melon seeds and disinfect seeds. The melon seeds are sterilized by dry heat at 70℃ for 72 hours or warm water at 50℃ for 20 minutes, and then taken out and dried for germination and sowing. Hami melon seeds can also be treated with 3% hydrochloric acid for 15 minutes. After washing, soak seeds with 600 times solution of 47% spring king copper wettable powder for 8 hours. After washing, germination and sowing can be carried out.

3. Crop rotation with non-melon crops for more than 2 years, and pay attention to removing dead bodies.

Chemical control: spraying 700 times solution of 47% spring copper (Garinon) WP or 800 times solution of 77% Kexide WP, 600 times solution of 78% wave manganese zinc (Kebo) WP, 1500 times solution of 10% difenoconazole (Shigao) water dispersible granule, 3000 times solution of 72% agricultural streptomycin sulfate soluble powder, 1000 times solution of 50% chlorobromoisocyanuric acid water soluble powder at the early stage of disease.