Seeding abroad has already achieved fine seeding (or solitary seeding) and many seeds have achieved pelletization. In domestic sowing of corn, most of the plants in the southwest are transplanted with seedlings, and most of them use sowing and sowing. Recalling the history of China's corn seeding promotion, Zhengda, Origen, and Great Wall have created three advantageous enterprises and promoted a number of advantageous seed production enterprises through the promotion of Yuyu 22 varieties and 121 precision seeding technology. However, after Yuyu 22 withdrew from the market, this cultivation mode also withdrew from the historical stage. After Denghai Pioneer entered China, it first adopted the 121 precision broadcast technology to promote Denghai 3, but eventually changed to single seed broadcasting; Practice has proved that 121 precision broadcast technology is not suitable for China's national conditions. Why corn in the world's main growing countries have long been used to grow corn using single seeding technology, but China has only begun to promote the single seeding cultivation in the 21st century. What caused unicast technology to enter China so late! Is China's "millions of households" really not suitable for this model? Can single seed sowing guarantee seedlings? A lot of problems have been broadcast by single shots. Will it be as short-lived as China's 121 broadcast technology? Is single seeding a technical hype? What are the advantages of unicast? Advantage 1: The easiest and most productive cultivation techniques (high yield conditions for corn are “seven-minute, three-in-oneâ€) 1, the density is once in place, the plant spacing is uniform, and the photosynthetic efficiency is high 2, no seedlings do not hurt the root 3, Miao uniform, Miao Qi, easy high yield Advantage two: Labor, labor, and money Fine sowing (or solitary seeding) saves a lot of subsequent heavy work, saves a lot of work for the farmers, saves a lot of labor, and ultimately can save investment, and more importantly, can work to earn money. Advantage three: Facilitate mechanization. Intensification and mechanization are the only way for China's agricultural development. China has a large number of precision broadcast machinery manufacturers (manufacturers list is slightly, who are interested can contact the author), but the precision broadcast machinery is relatively slow. This is mainly due to the extensive planting and the low level of seed quality. However, due to the recent introduction of air-suction seeders in the promotion of single seeding by some companies, the mechanization of sowing seeds is accelerating. Advantage four: Provincial seed. China's annual production of corn seed area is more than 3 million mu. Basically, the regions with good production conditions can save a lot of good quality land if they can reduce the production area. Facilitate mechanization. Intensification and mechanization are the only way for China's agricultural development. China has a large number of precision broadcast machinery manufacturers (manufacturers list is slightly, who are interested can contact the author), but the precision broadcast machinery is relatively slow. This is mainly due to the extensive planting and the low level of seed quality. However, due to the recent introduction of air-suction seeders in the promotion of single seeding by some companies, the mechanization of sowing seeds is accelerating.
The
medical compressed air plant consists of the air compressor, general
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mist and moisture in the compressed air through an adsorption dryer
filter unit, delivers the air to the air storage tank and supplies it
through a pipeline to the terminal equipment in the operating room, ICU
and other inpatient wards after decompression.
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