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Mechanized transplanting of rice seedlings technology

Dongfeng is the one for a 2s-type plug wash arm Chute rooted in the transplanter, the complex extractor seedling traits, seedling size varying thickness, root length tangle, seedling roots in the seedling leaves uneven, resulting in seedling extractor transplanter work of poor quality, hook wound seeding rate of 15% pass rate uniformity only 80%. Therefore, the aircraft has not been promoted. 7O's, to meet with the Ministry of Agriculture to promote the need for soil transplanting techniques, developed a large, dual seedling transplanter. 8O's, the disk seedlings technologies, promote the dissemination and use of rice transplanter. Liaoning Province, 1979 Mountain Trading Co., Ltd. from Japan Post to introduce rice cultivation equipment, in Donggou County, Dawa experimental demonstration, the whole process of mechanization, and in practice the process of industrialization breeding in Japan conducted a process and equipment simplified. From 1985 to promote a Throwing is the promotion of early 9O new technology for rice cultivation. Japan 6 (), there's paper tube seedling 1970 Pine Island, developed a pre-sub-three seedlings, and do not string the root of the special plastic tray. Carried out since the 60's of rice seedlings with artificial soil test throwing breaking blocks, 8O early in the introduction of the Japanese throwing techniques, based on the seedlings began to study the bowl of rice seedlings Throwing technology. Seedlings seedlings bowl for the mechanization of throwing technology provides the conditions for the promotion of technology. 2 at home and abroad seedlings seedlings technology is the first link in rice production, seedling technology changes have contributed to each rice production technology. 2.1 air air the whole entire seedling root root nutritional bowl bowl seedling nutrition in the United States ��3�� State University, Biological and Agricultural Engineering, Professor Huang Guoyan proposed, and its upper bowl cavity is small, the lower square is a large body of cone , the following are all open. When people nursery pot filled cavity or compressed peat Yingyang Tu cake, and sit cross-legged in the nursery seedling area of 50% or more mesh sieve surface. When the seedling roots to be 32. - From the bottom of the sieve bowl cavity exposed,[link widoczny dla zalogowanych], due to exposure to dry air leaving the roots stop growing, so as to promote secondary root development. This phenomenon is called The air the whole root nursery seedlings nutritional bowl many and strong roots, no roots phenomenon to be wrapped,[link widoczny dla zalogowanych], Yingyang Tu high utilization to meet the distribution of seedling roots was cone body shape, density and heat dissipation under the memorial hardened. As the lower bowl of the upper chamber of small structures can be easily large cavity from the bottom of the bowl out, without prejudice to seedlings, not to hurt the roots,[link widoczny dla zalogowanych], easy to implement mechanized transplanting. 2.2 throwing rice bowl throwing sports is the use of plastic seedling tray or plate bowl seedling seedlings by hand breaking blocks, and then thrown in the air scatter seedlings, seedling field due to gravity and fall planting of a rice cultivation method. Currently, the mechanical throwing is testing promotion. Throwing the first bowl of rice seedling sport began in Japan, 6O Japan's Hokkaido Central Agricultural Experiment Station to address the problem of rice seedling cold tolerance nursery Throwing carried out on paper simple test. Throwing in the introduction of Japanese technology, based on the development of the throwing of plastic disk with a low-cost, durable, hard plastic designed to offer sub-cavity-type seedlings and seedlings developed the factory's facilities. This will greatly promote the development of mechanization and throwing. 2,3 Seedlings in Rice Seedling by seedling seedlings days, leaf age,[link widoczny dla zalogowanych], height can be divided into milk seedling, seedlings, in seedlings,[link widoczny dla zalogowanych], seedlings of four categories, as shown in Table 1. Table 1 Classification of rice seedlings (seedling tray) seedling leaf age class taboo days (days) height (cm) per plate inserted volume lg) milk Zhuo I a 28 a l05-8> 200_, Miao 2-25l5-258 in a l5200 Miao Miao 3545304oI5-2ol0o big 5-6> 4ol8-30 <l0o Japanese rice seedlings in the forest canopy, the seedlings, seedlings, based on the 1982 seedling cultivation technology of rice milk. Milk is the Age of seedlings 1 to 2 leaves, height 5 ~ 8era, 7 ~ 1O-day nursery seedlings. Seedlings in nursery seedlings can significantly reduce costs and shorten the breeding time. Since its endosperm milk seedling survival rate is high and strong resistance to adverse environments, Huanmiao fast, low temperature and high survival rate, early vigorous growth, 3 to 4 weeks after transplanting seedlings can catch up, the output of not less than seedlings. Japan and Korea has been promoting milk seedling transplanting of rice seedlings has been weak link, will try to milk on the transplanting of rice seedlings transplanted to open up a new way of development. Seedling technology innovation, will provide for the mechanization of rice seedling transplanting new opportunities and challenges. Continuous development in agricultural mechanization at the same time, seedling technology will promote the planting machinery of continuous improvement. (2000-02-11) �� Sun Jidong Agricultural Mechanization Research Institute of Liaoning Province 1110111
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