How to manage garlic growing period

The growth management of garlic, especially after the rejuvenation period, is directly related to the yield and quality of garlic.

I. Management of the rejuvenation period

In late February, the weather was getting warmer, the seedlings turned green, adventitious roots began to grow in the lower part, and garlic bolts and garlic began to differentiate, so as to ensure the robust growth of seedlings and accumulate more nutrients for the differentiation of garlic bolts and garlic, which is the key to seize the high quality and high yield of garlic. According to the results of the second soil survey in the province, continuous cropping in the main garlic producing areas of our province leads to the relative lack of trace elements (iron, copper, manganese, zinc, magnesium, molybdenum, boron, cobalt, etc.) and calcium in the soil. The lack of trace elements directly leads to the unhealthy and stunted growth of garlic plants. Serious can make fungi, bacteria invade to produce a variety of diseases, resulting in reduced production, or even no harvest. The management measures for this period are as follows: (1) to clean up the dust on the mulch. (2) repair the damaged plastic film in time. (3) remove the covering on the film. (4) spraying Kangpei No. 2 foliar fertilizer at the beginning of March to supplement trace elements. (5) when the daily average temperature is about 12 ℃, irrigate the strong seedling water and apply 6kg of pure nitrogen and 2kg of potassium dihydrogen phosphate with the water. At this time, if fungal leaf blight is found, it is better to spray 30 kg of water evenly with 43% Hollick two packs plus 15 g Kangpei No. 2 at the initial stage of the disease.

II. Management of bolting period

With the increase of the number of garlic leaves and the expansion of leaf area, garlic bolts elongate slowly with the plant, and the leaf area reaches the maximum when flick the tail, which is the parallel period of vegetative growth and reproductive growth. This period is the period when garlic needs the most water and fertilizer in its life, accounting for 40% of its life. At this time, only when the water is big and fat, can the garlic bolts grow evenly and uniformly up and down. Management measures: to promote mainly, the upper leaves were sprayed with Kangpei No.2 foliar fertilizer every 10 days. When the garlic stalk is about 70% of the tail, urea 20 kg and diammonium 10 kg are applied with the water.

III. Management of garlic during its rapid expansion period

After bolting, the worry at the top was removed, the nutrition in the garlic was rapidly transferred to the ground, and the garlic entered a rapid expansion period. The yield of garlic mainly depends on the leaf area after bolting, the protection of functional leaves, the fertilizer and water supply capacity of soil and the absorption function of root. The management measures of this period: Kangpei No. 2 foliar fertilizer is often sprayed to develop the root system and absorb more nutrients and water from the ground. Prolong the leaf function and root life as far as possible, hurt the pseudo-stem and leaf as little as possible during bolting, and protect the normal growth of the leaf. The surface should be dry and wet, and stop watering 5 days before harvest.

Fourth, timely control of garlic maggots

Garlic maggot is the main pest that harms garlic, and the migration of adults is very strong. In order to prevent the harm caused by garlic maggots, the unified control of adults is the best. Control methods: from late April to early May, during the peak period of adult Eclosion, the adults were trapped and sprayed with sugar and vinegar solution to control adults. The sweet and sour solution (100g of brown sugar, 100g of vinegar, 25g of liquor, 10g of 90% crystal trichlorfon, 300g of water) was stirred evenly, poured on the saw or bran, sealed, opened the lid on a sunny day, trapped and killed adults, and when the number of adults increased sharply, spray 1000 times of dichlorvos in the field in time to control adults. When the larva damage reaches the control standard, 48% Lexben 500g or bt emulsion 2kg can be applied with water.