The garlic is caught early after the spring tube.
The temperature of autumn sowing garlic in 2006 was higher than that in previous years from planting to the first ten days of December, which accelerated the growth of garlic seedlings. Before winter, garlic grows to 710 leaves (the best seedling age for overwintering is 57leaves), the phenomenon of seedlings has appeared, and the mother has been rotten, resulting in insect pests. As a result, garlic grows too fast, resulting in poor nutrition accumulation, reduced stress resistance, slow return to green after years, serious disease and low potential for high yield. Garlic should complete a series of growth processes in spring, such as turning green, vigorous growth of seedlings, elongation of garlic vines, expansion of garlic and so on. On the basis of applying sufficient base fertilizer, garlic still needs topdressing in spring, and the amount of topdressing is controlled at 12.5 kg of pure nitrogen and 5 kg of potassium. Fertilization should grasp the period of vigorous growth of nutrition (the first and middle of April) is the maximum efficiency of nitrogen fertilizer, and the expansion period of garlic (Grain Rain to the Beginning of Summer) is the maximum efficiency of potash fertilizer. Therefore, garlic should be managed early this spring. In view of the existing problems, we should do a good job in the management of high-yield matching techniques to ensure high-yield and bumper harvest of garlic.
Skillfully apply re-green fertilizer: garlic can be sprinkled with 40% nitrogen and sulfur fertilizer 15kg / mu or urea 10kg / mu after seeing green in rain and snow. In order to make up for the lack of excessive consumption of soil nutrients due to prosperous growth, improve the fertilizer supply capacity, and meet the nutrient needs of garlic turning green.
Heavy application of seedling fertilizer: 40% nitrogen and sulfur fertilizer 30kg / mu or urea 15kg / 20kg plus Dingtai brand organic fertilizer (protease type) 10kg / mu in early April (around Ching Ming Festival). It can be carried out by the combination of spreading and flushing. In this period, re-application of nitrogen and sulfur-based fertilizer, combined with warm fertilizer which can increase the supply of soil bioactive nitrogen, to improve soil fertilizer supply and accelerate the ability of root system to absorb fertilizer, to meet the nutrient demand of vigorous growth of garlic.
Good application of expansion fertilizer: when the garlic stalk is tasted (mostly before and after Grain Rain, no later than the end of April), 15 kilograms of high nitrogen and high potassium fertilizer can be applied to accelerate the expansion of garlic. In the future, only water will be watered according to the weather conditions, and no fertilizers will be applied on the ground.
Application of high-yield auxiliary magnifying agent: garlic magnifying agent should be sprayed 3 times during the whole growth period. Combined spraying was carried out in mid-March, mid-April and the end of April, respectively. The weight of garlic per mu has increased by 200kg to 300kg.
Strengthen the prevention and control of diseases and insect pests: garlic pests are mainly ground maggots, diseases include leaf blight, white rot, soft rot and virus diseases. The larvae can be controlled by spraying paracetamate or pyrethroid pesticides during the occurrence period of maggot adults, and the larvae can be treated with phoxim. The special medicine for controlling garlic leaf blight and white rot is Baiyujing, which can be applied as required. It can also be prevented and treated with hydantoin and so on. Garlic soft rot can be controlled by bacteria and neophytomycin.
Timely harvest: when garlic stalks bend dog hooks and buds become larger and the color changes from yellow to white should be harvested with a sharp knife in time. 15-18 days after collecting garlic bolts is the suitable time for garlic harvest.
- Prev
Occurrence species and control methods of garlic pests
In garlic production in Dali City, there are two main insect pests, namely Liriomyza huidosa and Pholiophora leonii. Liriomyza sativae mainly damages garlic at the early stage of growth (3- 6 leaves), and Oniophoris allii damages garlic at the whole growth stage, especially at the middle and late stages. In the control, Liriomyza huidobrensis can be used when garlic has 3--4 leaves. According to the situation, 1.8% of avermectins 10--15 ml/mu, 1.8% of alfoptin EC and 20--30 ml of Chongmanguang EC are selected.
- Next
Garlic management is clear
At present, garlic has grown 7~9 leaves, and the growth stage has entered the late stage of scale bud and flower bud differentiation. This stage is dominated by leaf growth, which is the key period for garlic growth and development. The root system expands gradually and turns from vertical growth to horizontal growth, the root system growth strengthens, the accumulation of nutrients accelerates, which is the period for the growth of garlic sprouts and garlic heads. Due to the reasons for the previous female withdrawal, coupled with the long duration of spring cold this year, watering and topdressing lag, the plants show dry tips and physiological dry leaves due to lack of nutrition, and the leaves are gray and dim, and do not grow.
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