Effects of cold wave and high temperature on orchids

"If a worker wants to succeed in his work, he must first sharpen his tools. If a businessman wants to succeed in his work, he must first know his goods. Similarly, if a person wants to appreciate his goods, he must first learn his nature." This is a passage in an article entitled "Raising Orchid to Make Wealth and Raising Orchid to Be Deceived" recently published by Professor Liu Qingyong. After reading it carefully, it really has a deep meaning. It is true that raising orchids is not like raising other flowers. Those who can raise other flowers may not be able to raise orchids. Because orchids have their unique growth habits and planting methods, do not master their knowledge and skills, random planting, how can there be a good reason to raise flowers?

Orchids in nature mostly grow in mountain valleys or shrubs at altitudes of 500-800 meters, and in an environment with loose soil, moist and fresh air. China's south of the Yangtze River due to the four seasons of climate, coupled with abundant rainfall, extremely adapted to the growth of orchids. There are also northerners who raise orchids, but they must create a good environment suitable for orchid growth habits to achieve their goals, which is naturally much more expensive than that of southerners. This shows how important climate and environment are to orchid growth. The cold wave attack in the middle of March this year and the continuous high temperature and drought weather in the south from June to August did cause a lot of losses to most open-air or balcony orchid growers in Jiangnan, some even serious losses. The reason for this is that it might as well be quick to spit it out.

One is from the end of February to the beginning of March this year, but see the climate obviously warmer, that early spring February warm sunshine urged most of the orchids in the south to open screen, all over the orchid exhibition also followed six consecutive development, people look forward to early spring, beautiful pleasant scene, early reflected in the eyes of southerners. However, the southerners who have been placed in pleasant and good scenery, no one thought that in the middle of March suddenly appeared cold wave attack, minus 3-4 degrees Celsius low temperature, really gave the open-air orchid and balcony orchid raisers a fright, originally just removed cold-proof plastic film or cold-proof plastic plate can not be immediately covered, Lan friends only hope that the cold wave recedes early, who knows that a week, resulting in a lot of Lan friends orchid loss serious, there is a sense of complaint. Investigate its reason: First, orchid leaves and roots are severely frostbitten, combined with frostbitten roots and high temperature in summer burning, plant direct death many. Second, the leaves and roots are frozen, resulting in the new buds that are about to sprout in spring unable to break out of the soil, plus the high temperature month died under the mud. It seriously affects the germination rate. For example, the author himself has spring orchid's big rich, green peach, small butterfly, Cangshan Ruixue, red shell lotus element, cymbidium's Oriental Hui, Hanbi Mei, Yinbian Hui, halberd Hui and so on did not even send a bud; there are also very few buds, such as Yi Pin, Xiaochun, Wenzhou Su, Duanhui Mei and so on have more than a dozen seedlings of old grass, only sent a new sprout grass, according to the normal general germination law, at least 2-3 seedlings, more than 4-5 seedlings of new grass. There are other reasons for this, but the cold wave attack is the main reason. Like this phenomenon, in Huangyan Lanyou conversation learned, more common. Therefore, the author still has to say that winter cold is important, but the ancestor's sentence "spring does not come out" is still a wise saying, there is a reason, and it is best to choose cold facilities close to the Qingming season and then withdraw, so as not to repeat the same mistakes.

Second, the high temperature weather lasting 35-40℃ or even above 4O ℃ began on June 26 this year, and the drought was serious. It lasted until the middle of August, when there were several thunderstorms, which relieved the drought and lowered the temperature slightly. But in this hot season, many orchid friends who have installed more advanced and scientific greenhouse facilities have little to do with it, while those who raise orchids in the open air or on balconies also complain. The main reason is high temperature, dryness, rapid evaporation of water in the orchid basin, resulting in Lanyou had to pour water twice a day morning and evening, even in the middle of the rain again, although doing so to keep the water in the orchid basin moist, but too high temperature makes the moistened soil in the basin produce sultry, due to continuous high temperature for a long time, orchid roots in hot soil for a long time, resulting in many Lanyou orchid root rot and neck rot disease, but also some occurrence of Barras disease, In addition, these three diseases are almost impossible to cure in the current blue world. For example, a certain Lanyou spent 30,000 yuan when he was in Shaoxing Lanzhan in April this year. He just bought 3 seedlings of Cheng Mei, and two seedlings of new grass were sent out after being potted. He could not withstand the test of high temperature, resulting in neck rot and "complete annihilation". There is also a large orchid farmer, caused by this high temperature neck rot and root rot, fully deprived of all kinds of high-grade orchids he cultivated worth about 300,000 yuan, so that he complained. Another example is that my orchids are also affected by high temperature. Although neck rot and root rot have not occurred, many of them have suffered from Baras disease (i.e. virus disease). I applied dermatitis cream to the affected areas and sprayed with 1:60 quicklime clarification solution. Although the disease progress and spread have been controlled, the disease spots left on the leaves are difficult to erase, which seriously affects the appearance. It is estimated that the germination rate of next year will also be affected. Orchids such as the above-mentioned continuous high temperature disease, Huangyan local is not a few.

For this 50-year period of continuous high temperature, drought, in history is rare, its impact on orchids is also obvious. It seems that how to deal with, there is no predecessor more experience can be used for reference, Lan friends are almost helpless, helpless. Now the author narrates it for the common discussion of the majority of Lan friends, forming the trend of group defense, believing that there are always ways to overcome it, so as to sum up experience and leave it for future generations.

Zhejiang Zhangjinguo

Unit: Taizhou City Huangyan District Science Association

Address: No. 156 Qingnian East Road, Huangyan

Tel: 0576-422527

Postal Code: 318020