The solar greenhouse color pepper is in the fruit setting and the expansion period from late September to early November. The climatic conditions in this period are most suitable for the growth of sweet peppers, and it is also an important period for the plants to grow vigorously and the fruit development is the fastest. The output before the Spring Festival is the formation of this period. of. Production should take full advantage of the excellent climatic conditions during this period, such as the right temperature, adequate lighting. If you miss this period, it is difficult to form a condition suitable for the growth and development of colored peppers from November to January. 1. Replace the film. Replace the old film with a new one, and it must be a drop-free film to increase the light intensity. 2. Water and fertilizer management. This period needs sufficient nutrition and moisture, weekly watering, topdressing 1 times, nitrogen: phosphorus: potassium = 1:0.5:1.5, application rate of 10 kg per mu. 3. Plant adjustments. According to the specific situation, fight once a week, the sick strain should not burp with normal plants at the same time, smoking is prohibited when snoring to prevent the spread and occurrence of tobacco mosaic virus disease. 4. Temperature, humidity, ventilation management. During the day, the air temperature is 28°C, 17°C or more at night, the minimum temperature is 15°C, and the ground temperature is 20°C to 22°C. The relative air humidity is 70% to 80%. If the air is too dry, clear water can be added to the ditch to increase the humidity. In the early stage of flowering and fruit setting, the night temperature should be kept high, and the night temperature during fruit expansion can be reduced to 12°C to 15°C. The weather changed greatly in October, and production should be timely released and covered with insulation according to the changes in the weather. 5. Pest control. In recent years, powdery mildew has occurred frequently in greenhouses, causing serious defoliation. During this period, the weather is relatively dry. We must pay special attention to the occurrence of powdery mildew. Prevention and control should be based on prevention. After entering September, chlorothalonil smoke or powder should be used for prevention once every 7 days (and other diseases can also be prevented). If conditions are available, Amisida can be used as an efficient, broad-spectrum fungicide. Prevention and treatment, once it occurs, should promptly spray Shigao, Fuxing and other agents for prevention and treatment. Western flower thrips are very harmful to the color peppers, and they are very resistant to insects. They breed quickly and are very harmful. They are hidden in flowers and are not easy to control. Can be used Ruidan, Wan Ling, vegetable insects net, good year winter and other agents alternately used or mixed, as far as possible to prevent and control before flowering. (Beijing Academy of Agricultural Sciences Vegetable Research Center)
Vegetable Seeds are used in the production of vegetable seeds, divided into conventional and hybrid seeds.Vegetables that conventional types of vegetables to grow itself through natural laws of seeds, vegetables hybrid seeds (general hybrid F1 generation of hybrid) is by using different features of plants (male and female parent) for their pollination, change its characteristics.
First, many varieties and complex.In science and technology is the first productive force and science and technology oriented market sense, such as policy, scientific research institutions, experts and scholars engaged in the work of agricultural breeding have mushroomed, new achievements and new varieties are created.The resulting problems, a species and strains are many, character difference is small, removing impurity harder when breeding, varieties of authenticity and purity is difficult to guarantee;Second, in many scientific research units and experts and scholars of breeding race, south guo is inevitable the sham as the genuine, some traits instability, poor adaptability, or no market with a production value of species, strain, misleading, interfere with the normal order of seed production and operation.So for buying vegetable seeds, should be on the basis of reputation good place.Buy formal cultivated seeds.
Second, the seeds and the seeds are similar, strong concealment on production.A similar appearance.And both in plant and seed itself, the difference between conventional seeds is not very big.So on the choice is very difficult to identify.Thus caused the insufficient understanding of seed and hurt production.Especially the base vegetables with particularly can't careless.
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