Up to now, most of the timber forest bases in Fujian, Hunan and other provinces have used seed orchard seeds for afforestation(72 cell flats), and the primary seed orchard has obvious benefit in increasing production. It is necessary to adopt cross pollination plant breeding method(20cm plastic grow pots). The practice shows that the ideal effect can be achieved only by combining the good breeding with the whole forest management measures.
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Forestry and agriculture are the same(50 cell tray). There are two measures to promote fast-growing and high-yield. One is to improve the conditions for carrying culture, such as selecting suitable afforestation land, land preparation, tending, thinning, pest control and so on. The other is to improve the tree species itself, that is, to select good varieties for specific afforestation land(23cm plastic grow pots). In this sense, provenance testing has a long history.(high quality plastic terracotta pots bulk in kuwait)
Considering the characteristics of trees and forestry management conditions, forest tree breeding has the following characteristics(72 cell plug flats): in the whole life cycle, the improved varieties only need to be used once to achieve the purpose of increasing production or improving the ability of resistance to adversity(51 cell trays bulk). It is more economical and effective than other cultivation methods. However, having a good seed does not mean having everything.
(high quality plastic terracotta pots bulk in kuwait)It will take several years or even decades for most species to reach sexual maturity and economic maturity, with a long generation and a long seed cycle(herb plug trays). Because trees have been blooming and bearing fruit for many years, the selected materials can be reproduced and utilized in a long period of time, so they can be re selected after genetic determination(104 cell trays bulk). The work of Chinese fir seed orchard has made rapid progress.
At the same time, the trees are large and occupy a large area(32 cell tray). It is difficult to carry out genetic test (including progeny test and clone test) and multi generation breeding. However, the existing experience shows that the selection of superior trees is effective. The selection of superior trees can be combined with the process of propagation(72 cell seed starting trays), so that the selection work can be effective in production as early as possible.
Most of the species are widely distributed, with different levels of development and utilization(v13 nursery pots). In addition, the history of forest breeding is short. There are still a large number of excellent genetic types that have not been found and utilized in nature. The potential of selection and introduction is great and the effect is fast(128 cell seedling start trays). Breeding resources can be classified according to their sources, origins and cultivation.(high quality plastic terracotta pots bulk in kuwait)
Self pollination or inbreeding will cause decline(288 cell tray). At the same time, many tree species can also be vegetative breeding, and clonal breeding can be carried out. The combination of sex and clonal breeding is an effective way of tree breeding. In most cases, it is suitable to select and breed tree varieties with wide genetic basis or to use mixed varieties(128 cell seed starter trays). The achievements at home and abroad in the past 20 years are proving this point.
(high quality plastic terracotta pots bulk in kuwait)According to the current development level of forest breeding, they can be classified as follows: including the two categories that have been cultivated by artificial lines and are in the state of natural growth(50 cell plug flats). If we can make full use of its advantages and skillfully combine the multi generation improvement of trees with the short-term breeding work, we may achieve some results even in a few or more years(seed plug trays wholesale).