Application of Soil Testing and Formula Fertilization in Chengdu
With the progress of the times, soil testing and formula fertilization has been increasingly recognized and accepted by farmers and grass-roots workers. As an important city for featured agriculture, as early as 2006, Chengdu’s grass-roots agro-technical extension workers began to use soil testing instruments. Soil analysis of farmland provides scientific guidance and measures for developing characteristic agriculture.
In order to explore special crop fertilization techniques and establish a fertilization technology index system, characteristic industries have been conducting soil testing on dehydrated vegetables, alfalfa and other specialty crops in accordance with different soil types, different fertility levels, and different regional priorities in Chengdu. Formula fertilization test. Through the determination of soil physiochemical properties, survey of local farmers' fertilization habits, combined with the characteristics of the crop demand fertilizer, the relevant experts from the autonomous region were invited to work out a reasonable test plan, and four “3414†tests and 4 abundance indicators were arranged on dehydrated vegetables and pods, respectively. Test, 10 field calibration tests. Through experiments, we have mastered the basic parameters of soil nutrient correction factors, soil nutrient supply, fertilizer requirements, fertilizer utilization, and other basic parameters of dehydrated vegetables and alfalfa in different cultivated land types and different cultivated soil fertility levels in Chengdu. Technical indicator system.
With the continuous expansion of the scale of rural land management rights in Chengdu and the continuous expansion of the business area, large-scale land cultivation and intensive management have gradually been concentrated in the hands of professional cooperatives, farmer brokers, and agricultural product processing companies. In the application and extension of soil testing and fertilizer application of special crops, as long as the training of processing technology backbones in processing enterprises, professional cooperatives and farmers’ brokers is completed, the problems of difficult technology promotion for thousands of households can be solved, and the technology placement rate can be improved. The benefits have been highlighted and played a model role, which has played a catalytic role in promoting soil testing and fertilizer application in specialty crops.
In 2009, Chengdu Agricultural Technology Promotion Center has deployed 10 technical personnel to make use of the special crop fertilization technology in place within 3 days. It is truly a technology-to-people and formula-fertilizer field. The advantages of this combination are mainly reflected in the following aspects: First, the formula card has a high instruction rate. The operator can apply the formula fertilization technology to the production of a thousand acres of fields with only one card in hand. Second, the demonstration is strong and the use of agricultural products is processed. Land and scale operations circulated by enterprises, professional cooperatives and peasants' brokers, and establishment of iconic demonstration areas for the application of specialty crop formula fertilizers can guide the surrounding farmers to actively use formula fertilizers. Farmers actively buy fertilizers by passively purchasing fertilizers. Through demonstration and guidance, from point to surface, radiation led farmers to actively participate in the application of specialty crop soil testing and fertilization techniques. According to statistics, in 2008, the application area of ​​formula crops in Chengdu was 335hm2, and the area of ​​application in 2009 reached 0.2×104hm2 or more, and the area of ​​application in 2010 reached 0.34×104hm2. Third, the smart service was improved, and agricultural product processing companies, professional cooperatives and farmers The land flowed by the broker each year tests the status of soil nutrients before planting special crops. According to the output targets provided by the operators, the fertilization advice card is printed on site, and modern fertilizers such as “a computer expert prescribes a prescription and the land eats a nutrition package†are applied. Technology is fully reflected.
Tower Crane gear means the 19 38 99 teeth gear and the bevel gear, which are the critical parts of the tower crane reducer. 19 teeth gear and 38 teeth gear are connected with two motor shaft repectively, which are connected with 99 teeth gear. The speed is reduced by the transmission of gears.
Bevel gear is used for tower crane hoisting reducer.
Bevel Gear,Tower Crane Sun Gear,Crane Pinion Gear,Tower Crane Transmission Gear,Tower Crane Drive Shaft
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