In the autumn, the winter storage onions will enter the soil management stage. Soils have the effect of preventing lodging, softening pseudo-stems, and improving light blue yield and quality. The higher the soil, the longer the light blue, the brighter white and fuller. The height of short white varieties is generally about 20 cm, and that of Changji varieties is 30 to 40 cm. When cultivating onions, the growers should pay attention to the following matters:
1. Do not take the width of the soil too wide or too deep so as not to damage the root. 2. Earth should be photographed to prevent rain or water from falling down. 3. The soil is too dry and too wet to be suitable for earth-cultivation. It should be done when the leaves are soft in the afternoon, and the soil should not be damaged when the leaves are crisp in the morning. 3. The high temperature season can not be earth, the number of earth should not be too much, generally earth 3 to 5 times. 4. Do not use earth too deeply once, and cultivate the soil to the boundary between leaf sheath and leaf body, that is, only leaf sheaths, do not bury the leaves. On the rows of welsh onion soil, spray no deep ploughing soil conditioner. 200 grams per mu, add 100 kg of water, try not to spray on the leaves. About 20 days, 50 cm deep soil is loose and transparent. In this way, not only does the root system develop well, it is conducive to high yields, and it is easy to work on earth.
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