Asparagus can generally be harvested in the second year after planting, twice a year, for the first time in April-June, and the second time in September-November. The weather in summer is hot, the quality of asparagus is poor, and the yield is low, so it is not suitable for harvesting. Cultivation of white asparagus, 1-2 weeks before harvest. In the spring, it should be carried out after the ground temperature has risen but the shoots have not yet emerged. However, it cannot be too early. A premature increase in soil temperature will affect the growth of young shoots. When soil is cultivated, unfermented compost and remaining stems and leaves from the previous year cannot be left in the soil, otherwise rust may easily develop in the shoots. The soil to be cultivated should be dry and loose to allow good ventilation. It is not possible to use soils that have been bonded into a block to soil, so as not to cause the young stems to bend or to make the asparagus green due to penetration of light. The height of the soil depends on the size of the harvested young stem. For example, the length of the harvested young stem is 17 cm, and the height of the earth ridge is approximately 22 cm. The entire ridge surface is flat and semicircular. In order to prevent the asparagus from appearing on the ground and coloring, it is necessary to always pay attention to the observation of the small cracks on the surface of the cultivated earth that are not for good reason (this small crack is due to the buds emerging from below). The method of harvesting is: After seeing a small crack, rub a little soil with your left hand, and after seeing the head of the young stem, pick up a little soil until you see the growth direction of the young stem. Then, the asparagus knife in the right hand is placed in the direction of the base of the young stem, the handle is lowered downwards, and the young stem is excavated. To be accurate, do not cut other unearthed shoots, but also hurt the roots to prevent the invasion of germs. When harvesting white asparagus, no matter how fine the young shoots are, if it has already been broken out, it should be harvested. After harvesting, the soil is filled into the cavity and leveled. The harvested asparagus was thoroughly washed with fresh water, and the diseased, curved and deformed sprouts were picked out, then graded according to the standards and cut to a certain length. Each 500 g was bundled into a bundle and covered with a damp cloth to prevent the coloring and fibrosis of the lighting. Poor quality. Fresh asparagus is very easy to rot, so after harvesting, try to refrigerate under conditions below 6C to avoid deterioration. It is best to go immediately to the factory for processing. China Agricultural Network Editor
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