To produce strawberries in the off-season, there are many more meticulous technical links to be dealt with. Only in this way can we obtain greater benefits in the production of strawberry in greenhouses. Here, the author summarizes the problems that the farmers face in production and their treatment measures. First, the concentration of gibberellin is not well mastered in greenhouses to promote cultivation, to select those species with shallow dormancy, flower buds require higher temperature and early maturing species, shallow dormancy, strong cold resistance, strong growth, pollen and more Sound, regular fruit size, less deformed fruit, high yield, good quality. Production practice proves that Fengxiang, Chunxiang, Qixiang, Jingxiang, Mingbao, Baojiaoshengsheng, and Guinuogan are all suitable for promoting cultivation. Among them, Fengxiang and Guinuigan are the main cultivars to promote cultivation. Before entering dormancy, certain measures of insulation are used to prevent their dormancy and allow them to continue to grow. For those plants that did not break the dormancy, gibberellin was sprayed to promote its growth and early flowering. This is a technical link, and some farmers often have poor control. They are manifested in the following aspects. First, they do not know when they break their dormancy. If the second problem does not break the dormancy, what is the concentration of gibberellin? Actually, the method of determining whether strawberry breaks dormancy is very simple. It is simply to see if the plants are standing and growing. If the strawberry plants are all lying on the ground, then they will not break the dormancy. At this time, it is necessary to spray gibberellin at a concentration of 5 to 10 ppm. That is, the concentration of 5 to 10 parts per million. Do not increase the concentration. Increasing the concentration may cause strawberry plants to overgrow, delay flowering, miss the best time to market, and cause unnecessary losses. The gibberellic acid spraying time is generally controlled by the heat preservation measures 20 days later, that is, in the middle and late November, the spraying should be uniform, and the heart and leaves should be sprayed to promote the early flowering of the top buds. Second, do not know the use of appropriate methods of pollination Because it is the off-season cultivation, the natural insect media, wind media, nature can not talk about, artificial pollination must be necessary, or the simplest method is to hire bees pollination, some farmers do not strawberry pollination, Strawberry fruits are strangely shaped, serious or even inconclusive, resulting in significant reduction in benefits. Artificial pollination can be done with a fan or with a brush. Third, remove the old leaves is not timely The most serious disease of strawberries is gray mold, this disease actually only survived on the dead leaves, to reduce the damage to the strawberries, we must promptly remove old leaves, diseased leaves in order to reduce the source of the disease. Fourth, fertilizers are not caught in time To make strawberries get large yields, it is necessary to chase fertilizer water in time. Generally, from the first fruit enlargement period, every 20 days, it is necessary to feed fertilizer once with water to ensure growth. Developmental needs. Each time the amount of catching is controlled at about 10 kilograms per acre of compound fertilizer, avoiding the use of potassium chloride-based compound fertilizer. The best way to chase is to dissolve the fertilizer into the solution and apply it with irrigation.
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