Onions are a kind of vegetables that we often see in our lives. Those who must have grown onions know that the biggest feature of onions is that they are resistant to storage and can be supplied to the market all year round. Therefore, as long as you want to eat onions, you can buy them all year round. It can be seen that its storage capacity is indeed very strong. So, everyone knows how to promote onion production when planting onions?
First, cultivate strong seedlings
The sowing time is from the end of September to the beginning of October. Before planting, we should choose land with loose soil, good soil water storage capacity and fertile land, and in the past two or three years, there is no field of onion and garlic vegetables as a seedbed. Apply enough base fertilizer to dig a 1.5-meter wide raft and pour water. When planting, choose dry onion seeds to spread, then cover the fine soil or the coke ash, knowing to cover all the seeds. Weeding measures should be done in advance after the soil is covered. It can be sprayed with 33% of the herbicide supplemented with 100 ml of herbicide, which can effectively prevent weeds from growing. Then cover it with a sunscreen to moisturize and protect the rain. During this time, keep the soil moist.
Second, transplanting and planting
When planting, we should also choose land with loose soil, good soil water storage capacity and fertility, and we have not planted the field of onion and garlic vegetables for two or three years. At the time of ploughing, 75 kg of quicklime is applied to adjust the acidity of the soil, and then the ground is used for hoeing. At the time of planting, the size of the onion should be transplanted separately, and those weak seedlings and diseased plants should be removed in time. The time for planting is best selected in late November, when the temperature is above five degrees, because the onion grows from colonization to growth. It takes about a month, so let the roots of the onions develop well before the onset of winter, so as to prevent the death of the seedlings due to the cold weather. The density of colonization is preferably 20,000 plants per acre, planted at a distance of 20cm*15cm, and watered after planting, which is conducive to the survival of seedlings.
Third, scientific management
Half a month after planting, a top dressing can be carried out, which is carried out with 5 kg of urea, which is beneficial to the growth of the roots. When it is about to enter the cold winter, lay some decomposed poultry manure on the surface of the land, which can protect the roots from cold and provide the onions with the nutrients needed for growth. After the temperature slowly rose in March, the onion officially entered a period of vigorous growth. At this time, it was necessary to apply a heavy fertilizer, applying 30 to 40 decomposed human excrement per acre, or directly applying 10 kg of urea. From April to May, it is the time when onion grows most vigorously. Therefore, it is necessary to increase the amount of fertilization. Apply 15 kg of urea per acre and 7.5 kg of potassium sulphate to water for 20 liters. This is conducive to promoting bulb expansion. Keep the soil moist.
Fourth, pest control
The main diseases include purple spot, gray mold, downy mildew. In case of illness, it can be sprayed once every other week with 25% and 75% chlorothalonil 600 times solution, or sprayed once every 10 days for two consecutive times. The main diseases include onion fly, onion and thrip horse, which can spray 50% phoxim 1000 times solution, or 40% chlorpyrifos 600 times solution for rooting and pest control.
The above is a detailed explanation of the method of increasing the production of onion cultivation. I hope that everyone can help. At the same time, everyone is welcome to pay attention to Hui Nong.
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