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A preliminary study on the famous carved wood of boxwood and its substitute
The main results are as follows: 1 the basic situation of buxusspp belongs to buxaceae and bunus, which is called boxwood in English. For evergreen shrubs or small trees, there are more than 70 species in the world, distributed in Europe, Asia, tropical Africa and Central America. There are about 17 species in China and 8 species in Yunnan. According to the record of Chinese Timber Chronicles, there are small tree timber forests distributed or cultivated in Shennongjia Forest region of Hubei, Wuyishan Mountain of Jiangxi Province and Sichuan Province, and there are Populus tomentosa with DBH about 30cm in Laoshan Forest Farm of Shandong Province.
2019-01-15 -
Management of fish species in autumn
㈠ cleans the pond. After entering autumn, the fish species should be transferred to the pond which has been cleared and sterilized for cultivation, so that the fish species can survive the winter safely. Where there are difficulties in the turnover of water sources and fish ponds, all the fish can be temporarily reared, disinfect the original pond with 75-100 kg of quicklime per mu, fatten the water according to the conventional method, and return the fish to the fish after the drug disappears. Separate cultivation of ㈡. It is necessary to make sure that the specifications of the fish species in the same pond are consistent. Large size fish species have large food intake and strong grabbing power. If small size fish species are put at the same time, small size fish species will cause.
2019-01-16 -
A very small spherical species-- white oblique
White plum, cactus, succulent plants. Like plenty of sunshine, cool in winter and keep the soil dry. White plum is a famous classic among cacti. Species, white and lovely, plus very rare, is listed as a first-class protection. But...
2018-06-03 -
What to catch in the management of fish species in autumn
Clear the pond. Transfer the fish to a pond that has been cleaned and sterilized for cultivation. If there are difficulties in the turnover of water sources and fishing ponds, all the fish species can be transferred out of temporary culture, then disinfect the original ponds with 75 kg ~ 100 kg quicklime per mu, and fertilize the water quality according to the conventional method, and return the fish species after the medicine disappears. Separate cultivation. Adjust the fish species according to different specifications, so that the specifications of the fish species in the same pond are the same. Large fish species have large food intake and strong food grabbing power, just like small fish species in ponds, small fish will not get enough feed.
2019-01-16 -
What should be caught by fish species management in autumn?
Clear the pond. Transfer the fish to a pond that has been cleaned and sterilized for cultivation. If there are difficulties in the turnover of water sources and fishing ponds, all the fish species can be transferred out of temporary culture, then disinfect the original ponds with 75 kg ~ 100 kg quicklime per mu, and fertilize the water quality according to the conventional method, and return the fish species after the medicine disappears. Separate cultivation. Adjust the fish species according to different specifications, so that the specifications of the fish species in the same pond are the same. Large fish species have large food intake and strong grabbing power, just like small fish species in ponds, small fish will suffer from physical decline because they do not get enough feed. Fish over 16 centimeters
2019-01-15 -
Common orchid species and small techniques for orchid maintenance
Common orchid species and orchid maintenance techniques as the orchid of the plum orchid bamboo chrysanthemum "four gentlemen in the flower" orchid, beautiful flower shape, vitality and environmental adaptability.
2019-02-22 -
Is it against the law to beat turtledoves?
Is it against the law to beat turtledoves?
2018-07-06 -
Technical points of safe overwintering of fish species to avoid economic loss
Technical points of safe overwintering of fish species to avoid economic loss
2018-07-14 -
What are the second-class protected animals in the country?
What are the second-class protected animals in the country?
2018-09-08 -
Parrot species: common parrot species: peony parrot, budgerigar, monk parrot, macaque
Common species of parrots
2019-02-15 -
Five points for attention in fish species management in autumn
The water temperature is suitable in autumn, which is the peak season for fish growth. Fish species management should do a good job in the following five tasks. 1. Clear the pond. Transfer the fish to a pond that has been cleaned and sterilized for cultivation. Where there are difficulties in the circulation of water sources and fish ponds, all the fish can be transferred out of the temporary culture, then disinfect the original pond with quicklime 75~100kg per 667m2 of water surface, and fertilize the water quality according to the conventional method, and then return the fish to the fish after the medicine disappears. two。 Separate cultivation. Due to the large size of fish species, large food consumption, strong food grabbing ability, if large and small size fish mixed culture, small fish will
2019-01-15 -
Common species of small and medium-sized parrots and their advantages and disadvantages
With the trend of society, pet parrots are gradually entering people's lives. They are appreciated and loved by people because of their beautiful feathers and good language skills. Now many people like parrots and begin to raise pet parrots, but
2020-11-27 Small and medium-sized parrots common species and advantages and disadvantages introduction pets -
Fine varieties of tea
Breeding and popularizing fine tea varieties is a fundamental measure to improve the quality and yield of tea and increase the economic benefits of growing tea. From a large number of production practice and scientific research results, it is proved that the selection of excellent tea varieties plays a role in tea production in many aspects: first, it can increase the yield. Tea yield is determined by comprehensive factors such as the number and weight of buds and leaves per unit area, the growth rate of buds and leaves in the annual growth period, the length of vegetative growth period and so on. Under the same conditions, different varieties have different yield factors, so the yield is different.
2019-01-16 -
Centipede species picture complete
Centipede species picture complete
2018-07-09 -
Introduction of bird species
There are many species of birds, according to the classification, birds can be divided into three heads, namely, flat chest head, penguin head, chest protruding head. A bird, such as an ostrich, that cannot fly for good walking; a bird, such as an enterprise, that is unable to fly for swimming and diving.
2020-11-11 Bird species introduction bird there are many according to -
Due to the water system, fish species should be put in reasonably.
In an activity of science and technology going to the countryside, the author learned that the output and benefit of many fish farmers were not ideal in the process of fish culture in ponds over the years. the main reason is that the fish species are not reasonably matched according to the fish diet and habits, and the species is single, the quantity is too large and the size is small. This situation exists more or less all over the country, and the end of the year and the beginning of the year is the season for the release of a large number of fish fingers. in order to make full use of the water body, put the fish species reasonably and increase the yield per unit area of the water body, the fish species will be put in reasonably according to the water system.
2019-01-16 -
What are the common species of parrots?
Parrot is a common pet bird, because it can learn to talk, so it is very popular, but there are many species of parrot, many people can not tell. So, what are the common parrot species? Let's get to know it together. 1. Budgerigar
2020-11-11 Common parrots which species are there parrots yes a kind of common -
Common species of parrots
Common species of parrots
2019-02-16 -
Which species of Luohan fish is beautiful? How to distinguish them?
Luohan fish is a very popular ornamental fish because of its colorful and beautiful patterns, graceful posture in the water, intimacy with people and good interaction with people. Which species of Luohan fish is beautiful? How to distinguish them? Which species of Luohan fish floats?
2020-11-11 Luohan fish a species beautiful should how distinguish they -
Key techniques for breeding fish species in autumn
Autumn water temperature is appropriate, is a good season for rapid growth of fish species, do a good job in autumn fish species cultivation is very critical, autumn fish species cultivation technology points are as follows: 1, clear pond after 2-3 months of fish species cultivation pond, water quality aging, natural bait reduced, harmful substances and pathogens increased. Therefore, after autumn, fish species should be transferred to ponds disinfected by pond cleaning for cultivation. Under the condition of relatively insufficient water and fish ponds. All the fingerlings can be transferred out for temporary cultivation, and 75-100 parts of quicklime are used for each mu of the original fingerling pond.
2019-01-15