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 Wysłany: Pią 7:24, 28 Sty 2011 Temat postu: supra for sale Development of Horticulture in Chin |
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Development of Horticulture in China and problems of
The Horticulture Technology lying Ng (e) the overall level of Horticulture embodied in horticulture to improve gradually to the beautiful, spacious, bright, easy direction, began to decrease the proportion of small-scale greenhouse, the new optimized gradually to Greenhouse promotion. Since structure building step by step scientific facilities. Makes the interior temperature, light, humidity are to be part of the optimization, is conducive to crop growth,[link widoczny dla zalogowanych], lay the foundation for the high yield and quality. In addition to increasingly rich vegetables, flowers, occupy a considerable proportion of the production, cultivation and breeding of fruit trees also began to develop. The development of Chinese horticulture goose to a new level. Began to scientific, scale and intensive development. Arts development facilities at the problems and worries (a) an area of horticulture, although first in the world. But still simple type and the Lord. Non-standard buildings,[link widoczny dla zalogowanych], facilities, low level of environmental control, poor ability to withstand natural disasters, severe weather and year the event there is no guarantee the production, farmers suffer losses, the market supply in transition move: (b) facilities is not high tech horticulture projects, regardless of facility itself or ancillary facilities and more traditional experience-based, the lack of quantitative indicators and set of technologies, does not meet the requirements of agricultural modernization, a large gap compared with developed countries especially in crop production levels, although there are high yield of a typical, but very generally, a large area with the developed countries the average yield far. (C) Horticultural production and management of facilities, mainly individual farmers, large-scale low level of industrialization, small-scale peasant production and management and the growing contradiction between a market economy has become increasingly prominent, it is difficult to go abroad with the international market. Developed countries,[link widoczny dla zalogowanych], has formed an independent horticultural industry system, China is still fragmented. Especially the . High-tech demonstration park all over the country,[link widoczny dla zalogowanych], but the content similar,[link widoczny dla zalogowanych], with strong regional Horticulture, must have the effect of local conditions; if not copy blindly, will inevitably lead to adverse consequences. Some high-tech agricultural demonstration park facilities as the image of the hardware engineering, performance engineering , running costs are high, not suitable for China's national conditions; and the lack of qualified management personnel, and a great negative impact. from the use of the introduction of greenhouse effect, the The wholesale introduction of modern cost plastic greenhouse of 360 to 520 yuan / ha, is a permanent energy-efficient solar greenhouse 1O to 15-fold and 5 to 7 times. Second is the high operating costs, operating costs of modern greenhouse is usually 45 - 60 yuan / (ha.), in which 60% of fuel costs; In addition, modern greenhouse forced cooling water consumption is also great, l5 million annual expenditure on water / ha. The third is the poor efficiency. modern greenhouse production, coal, water, electricity consumption of large, high operating costs, while the total consumption of low levels of social, if not the cost of depreciation, and most difficult situation in a high loss. This poor performance of the introduction of the main greenhouse operations There are two reasons: 1 the introduction of decision-making blind. greenhouse projects all over the country are often not done enough pre-feasibility studies, did not fully consider its nature, practicality, feasibility and adaptability. local leaders or business executives hasty decision-making, blind and Repeat the introduction of serious, and some greenhouse introduction to the kinds of expert advice only to find that what is good, some poor areas also consume huge amounts of money repeatedly to introduce large modern greenhouse. 2. is not suitable for China. This is the most important reason. Popular good words: warm summer and cool, mild seasons, the winter minimum temperature one by one in a 2 �� 6 ��, the highest temperature in summer Yun less than 3O ��, and the gas is very cheap, room temperature control energy consumption and low cost. and carry cold winter in northern China. Minimum Temperatures are usually in a 10'E ~ A 25'E. or even lower, heating energy consumption more. costs are high; the Yangtze River region, more than winter and spring rainy, cold light is poor, very bad for greenhouse production; summer heat, Ju more gas at 35 ��, not only the difficulty of the provision is too warm, and high cost. (Code Tangxiu Ping Qing �� port late at night
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