The cabbage seedlings have a wide range of adaptation to temperature and light conditions(4.72inch plastic plant pots), and the management of seedlings is relatively easy, so it is easy to grow when the seedlings are too dense and have a lot of water. Cabbage is cultivated in spring, summer and autumn, and the seedling time and the varieties used are different. Spring and summer cabbage seedlings should be selected for winter and early maturing varieties(wholesale nursery pots). When the seedlings grow 3 to 4 leaves, they should not grow for a long time below the daily average temperature of 5 °C to prevent the vernalization.
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(cheap plastic propagation pots wholesale supplier)Autumn cabbage is cultivated in summer, and most of the varieties are used in the middle and late seasons(4.92inch plastic plant pots). Rain, disease prevention and insect prevention are the key to raising seedlings of autumn cabbage. During the winter, the temperature of the seedlings is 18~20°C, and the night temperature is 10~12°C. When the seedlings are out, the ventilation starts to prevent the seedlings from growing. The moisture control is: from the cotyledon to the 2 leaves and 1 heart, the effective water content is 70%-75% of the maximum water holding capacity(plastic nursery pots manufacturers); the water content of the seedling 3 leaves 1 heart to the adult bacteria should be maintained at 59% to 60%.
The seedlings should be carried out during 1-2 true leaves(4.72inch plastic nursery pots). The main pests and diseases of cabbage seedlings are gray mold, black shank, aphids and snails. The control of gray mold can be sprayed with agents such as procymidone or iprodione. Symptoms of black smut, producing light brown lesions on the cotyledons, true leaves and stems of the seedlings, round or oval, with small black spots on them(black plastic nursery pots), which are conidia; lesions on the stems are slightly Depression. Seriously ill will soon die.(cheap plastic propagation pots wholesale supplier)
The prevention and treatment may be carried out by using a medicament such as chlorothalonil or thiophanate-methyl(5.12inch plastic plant pots). For the control of aphids, reference can be made to the control methods in tomato seedlings. The control of Liriomyza sativae can be controlled by avermectin and chlorpyrifos. In summer and autumn, the temperature and humidity are large. When cultivating cabbage seedlings(plug trays wholesale), the following points should be noted: the site with high ground potential and good drainage is selected, and the plots that have not planted cabbage crops within 2 years are selected as nursery sites.
(cheap plastic propagation pots wholesale supplier)When the common cabbage and kale are shaken in late June(5.5inch plastic plant pots), the green cauliflower can be raised 30 to 40 days in advance according to the planting period. In autumn and winter, the cultivation of Brussels sprouts is planted in the middle and late June, and the seedlings are cultivated in the autumn and winter protected areas from late July to early August. Kangshang should have a strong Yangyang anti-defense equipment(plastic nursery pots wholesale). When the sun is strong at noon, cover the curtain or shade net to cool down, and cover the plastic film to prevent rain in rainy days to prevent the seedlings from growing.
The light conditions in the seedling stage should be sufficient to promote the healthy growth of the seedlings(5.9inch plastic plant pots). From the beginning, the water management is carried out by small water washing, sunny day or evening after sunset, and the sowing date is determined according to the characteristics of the variety and the cultivation period. Excessive moisture can cause long growth, and insufficient water affects growth and development(plastic nursery pots). The tray seedling can be selected from 288-hole trays, and water is poured 1 or 2 times a day, depending on the growth state of the crop and the water content of the seedling tray.