After years of experience in the field, it is proved that in order to increase the yield of welsh onion, three points must be made after the beginning of autumn to ensure that the onion grows robustly, the roots are thick and strong, the leaf color is green, and the main stem is long and sturdy.
First, timely fertilization and watering
After the beginning of autumn, when the growth of plants is accelerated, topdressing "foliar manure" is applied, and culturing manure fertilizer per acre is 1,500 to 2,000 kilograms, and superphosphate is 20 to 25 kilograms to promote leaf growth. After the white dew, it enters the period of intensive growth, which is the key period for the development of welsh onion production. It should be combined with watering to top up the “attacking tree fertilizers†twice. Each time, the application of urea from 15 to 20 kilograms, potassium sulfate from 10 to 15 kilograms, and so on. Between the lines. Watering after shallow cultivating, generally 2 - 3 times, watering the soil on the ridge to dry, the principle of moist soil in the ditch.
Second, timely earth
The onion grows quickly. It is necessary to make sure that the green onion grows quickly and stoutly. It can be divided into 4 to 5 times of earth-cultivation. Every time the height of earth is cultivated, it cannot be buried mainly in the heart of green onion. Over-cultivation of soil is not conducive to rapid growth of white onion stems, excessive soil caused by rotten heart, the formation of reduced yield or yellow leaves.
Third, timely pest control
Onion pests and diseases are downy mildew, black mold, purple spot, leaf miner, root maggots, etc. Use 300 grams of “new high-fat film†emulsion per acre, watered 230-250 kg, spray evenly, spaced 7-10 days, spray 2-3 times in total to effectively prevent downy mildew of green onions. Black mold, sprayed with 0.1% copper sulfate or 1% lime water or 0.1% potassium permanganate solution 50 kg. Purple spot, sprayed with 80% dexamphin 0.5% aqueous solution or with 50% acetic acid 0.1% aqueous solution or copper sulphate, quicklime and water, 1:1:200 times the proportion of Bordeaux mixture sprayed, the amount of 50 kg per mu. Root pests, 5 kg of methamidophos per acre or 2.5% of trichlorfon powder 3.5 kg - 4.5 kg or 2.5 kg phoxim granules applied to the soil. Red spiders can be used to control 3,000 times -3,500 times the light or 2500 times -3000 times.
After the beginning of autumn, it is an important period for the growth of vegetables. The focus of the lush green field management is to promote roots, strong trees and soil softening, strengthen fertilizer and water management, and create suitable environmental conditions for the formation of light blue, thus improving the yield and quality of green onions.
The most common waxy and sweet corn market, waxy corn has higher nutrient content than ordinary corn, containing 70-75% starch (and almost all amylose), more than 10% protein, 4-5% fat and 2 % Of multivitamins have more grains, VA, VB1, and VB2 than rice with the highest content of protein, fat and VB2. Yellow corn also contains carotenoids, such as rice and wheat. The molecular weight of waxy corn starch is more than 10 times smaller than that of ordinary corn. The starch makes glutinous rice sticky and softer than ordinary hard corn. Its digestibility is more than 20% higher than that of ordinary corn, and it is suitable for people with irregular teeth. At the same time, the content of amylose (a kind of polysaccharide) is very high, which is not suitable for diabetics.
Waxy corn is also called sticky corn. The grains have rough, waxy endosperm, similar to shiny, transparent grains, such as hard and dented corn. Its chemical and physical properties are controlled by a recessive gene located on chromosome 9. 100% of the starch in the endosperm is amylose.
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