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Fresh cut flowers guard against falling cold
In the spring, the earth warms up and the temperature rises. The spring sowing spring production of domestic fresh cut flowers is also in full swing. However, the changing weather in spring has added many unknown factors to the production of flowers, especially in April and May in the latter part of spring. There are often continuous rainy weather and cold air intrusion, which is what we often call “cold springâ€. In the past two years, many regions in China have been adversely affected by frequent late spring and winter flower production. How to overcome this cold injury? This reporter interviewed some experienced manufacturers. “Before the spring and the cold in the spring, the cold winter in the south is mainly characterized by cloudy and rainy weather and severe frost. In the past few years, we have a very high chance of falling out of spring in Yunnan. Every year, flower growers suffer damage and production is impaired. The scale is not small, about 30%, and even some areas with serious disasters have even cropped up." Li Qimeng, general manager of Greelin Flowers in Yunnan, said that producers should pay more attention to the weather forecast in the spring before the cold snap. Make preparations. The vast majority of producers of fresh cut flowers have poor production facilities and do not have good conditions for cold weather. Before the temperature can be reduced, a double layer of membrane can be used to prepare some simple external cold preparations. Short-term warming must also be prepared. The time for spring is usually not too long. Flower growers can use some simple heating equipment for emergency, the cost will not be too high, but the effect will be very good. In the daily use of greenhouses, we must also pay more attention to closing the greenhouses to ensure the stability of the temperature inside the greenhouses. Compared with other crops, the ability of flowers to withstand the cold is still relatively strong, as long as the daily management and emergency measures after cooling down, the cold is not terrible. Zhu Yingxiong, a senior agronomist at Yunnan Lidu Flower Development Co., Ltd., said: “During the day-to-day production and management, there are many reasons for resisting low temperatures and diseases. For example, Bacon, we can combine spring weeding together, between the rows of flowers and plants. Shallow cultivator, cultivate the roots, raise the temperature around the soil by cultivating the soil, and watering. After the end of the winter, the producers can rush to apply flooding, watering roots, etc. Irrigation with water once to relieve the hazards of low temperature.In addition, the use of fertilizers and medicines is also very important, for example, flower growers can spray some potassium dihydrogen phosphate on the leaves of flower plants, which can be both anti-freeze and disease-resistant. Afterwards, we can apply more fertilizers, according to the severity of the damage, the amount of application will also be different, these nutrients can promote the rapid recovery of flowers after the disaster.After the low temperature, the resistance of various flower plants will be reduced, and the bacteria and pests are easy to invade. Diseases caused by low temperatures mainly include epidemics, anthrax, and sheath blight, and flower growers should spray them in time. Prevention or treatment will otherwise affect the quality of the flowers.Because the time and frequency of occurrence of late spring are not very clear, and the resulting impact is often confined to a certain area, it is not valued by growers. After the cold, lasting for about a week, although it will not cause catastrophic damage to the flower production, since the spring is often the seedling stage of most flower production, the quality of damaged seedlings will be difficult to recover, and the consequences will be The reduction in output and the decline in quality are directly related to the economic interests of flower farmers. Therefore, we must not neglect.