In the spring, as the temperature rises, the overwintering garlic in the main northern garlic producing areas begins to return to green (generally from late February to late March is the greening period of garlic), if it is a "double-film covered" plot, the second layer of film should be removed in early March. Field management of garlic will also begin. How to manage garlic after rejuvenation to achieve stable and high yield? It is summarized as follows:
Rejuvenation Management Technology:
After the garlic returns to green, it should be watered and fertilized in time, and the seedlings should be lifted and strengthened, and the return to green should be accelerated. Due to the low temperature last winter, many garlic seedlings were frost damaged, and weak seedlings with dry tips of yellow leaves appeared. We recommend that in the sunny and windless weather, timely fertilization and watering, urea per acre, high potassium compound fertilizer, conditional can be applied a large number of elemental water-soluble fertilizer, in order to promote the growth of stems and leaves, accelerate the return to green, in order to supplement the nutrition required by garlic, promote garlic growth, accelerate garlic rejuvenation, and at the same time prepare nutrients for garlic extraction and garlic clove expansion.
Strengthen the control of pests and diseases and improve the stress resistance of garlic
Due to the influence of temperature, in order to prevent the occurrence of diseases and insect pests of garlic, foliar fertilizer and spraying can be selected in the afternoon after the garlic enters the green at the end of March to promote early rooting, prevent spring cold, and improve its stress resistance. Protective medication for the uninseted plots, protective and therapeutic medications for the pathogenic plots, spraying through fungicides, plant growth regulators, foliar fertilizers, to promote the robust growth of garlic, such as amine fresh esters, brassica and fungicides pyrazole ether ester • pentazole, potassium dihydrogen phosphate, water-soluble fertilizer containing amino acids. It can promote root and strong seedlings, green leaves and strong trees, prevent yellow leaves from dry tips, control pests and diseases, and enhance stress resistance. Attention should be paid to the serious disease of the plot should be resolutely put an end to early watering back to green water, depending on the weather, moisture conditions to postpone the watering time, to provide a good environment for garlic root regeneration, breed robust plants.
Management of scaly bud differentiation to extraction stage:
After the garlic retreats from the mother, it enters the rapid differentiation period of flower buds and scale buds, and gradually enters the growth and progress of garlic and garlic head, garlic gives priority to enter the rapid growth period, at this time the leaf area reaches the maximum, the plant has a strong demand for water and fertilizer, it must be watered in time, combined with watering to apply nitrogen, phosphorus and potassium fertilizer, it is recommended to use Zheng's chemical Ameri balanced nutritional fertilizer to meet the nutrient demand of garlic. At the same time, it is also necessary to do a good job in the prevention and control of maggots, aphids and other diseases and insect pests, and spray drugs in time. Spraying plant growth regulators amine fresh ester and brassica brassica 1-2 times before pumping, combined with pyrazole ether bacteriostyl ester, phenoxymethylcyclazole • imidazol with a large number of elements, amino acid-containing water-soluble fertilizer, can promote pumping, so that garlic root system is developed, leaves are thick green, plant robustness enhances stress resistance, and can prevent leaf blight, purple spot disease and other diseases. Yield measurement during harvest can increase garlic yield by about 10% to 20%.
Garlic expansion stage management:
After the extraction, the garlic enters the expansion period of the garlic head, and the management point at this time is to prevent premature aging and promote expansion. After pumping and harvesting, according to the weather and soil moisture, timely irrigation and fertilization, keep the soil moist, fertilization is mainly phosphorus and potassium fertilizer.
In the expansion stage of garlic, spraying amine fresh esters and brassicain with the fungicide pyrazole ether ester and foliar fertilizer, while using rhizome expansion product choline chloride • naphthalene acetic acid, can prolong leaf function, prevent premature aging, prevent diseases, regulate the endogenous hormone balance of plants, promote nutrient transport to bulbs, make garlic head large and even, thereby increasing yield, improving quality, and forming high-quality and high-yield garlic.