The heavy buildings are not artificially domesticated for long periods of time, and at present they are mainly grown by the extraction of wild resources as a source of seeding and breeding material, which is largely at the initial stage of seeding, due to differences in origin and age, mixed species and the lack of systematic assessment of resources, especially with regard to the routine research on sexual and chemical composition regulation mechanisms。
The heavy buildings are the first to be used as a medicine, the effects of which are the first target of breeding, and more than 0. 8 per cent of the total quantity of heavy buildings with a higher level of therapeutic content than the prescribed quantity of heavy buildings i, ii, iii and iv, as required by the chinese pharmacy. Second, because of the slow growth, long life and low accumulation of dry matter in the heavy buildings, the selection of seeds for the heavy buildings is more targeted at high production or high growth rates, where pharmacological standards are met. In the middle of the natural world, which is usually a single leaf and is issued only once a year, with small assimilated organs, low photo-efficiency banks and low accumulation of dry matter, most of the selections are based on morphological indicators of the size of the leaves and the number of plumes。
In addition, wild buildings grow on a zero-month basis with little incidence of disease, but since large areas are cultivated, since the pelican complex is a multi-year plant, long-term intermingled area, pests and pests are prone to widespread occurrence, and the main diseases found in yunnan are foliage, root corruption, stasis and anthrax, with high levels of disease, with rates ranging from 50 per cent to 70 per cent。
It is a leading firm in yunnan, specialized in the cultivation of heavy buildings. The company's base is in wuding county cat street, yunnan province, and after 11 years of tireless efforts, the company's technicians have now set up a complete system for the cultivation of philistines. The company built itself more than 500 acres of a wild growing base under the forest. Over 300 growers, large and small, with an area of almost 2,000 acres。
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