tory burch outlet Gis and gps based nutrient manag

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GIS and GPS-based nutrient management in tobacco fields


The data above 70 g, accounting for 30.7%, the spatial distribution of zinc deficiency on the performance of the larger east, the city's 80% of the tobacco fields for zinc or zinc in the critical range. Figure 4 by the spatial distribution of boron, and sample analysis combined data can be seen, Sanmenxia City, Kamada soil boron in general, from data only from the selected sample, 80 percent of the tobacco fields of extreme soil boron, boron should attach great importance to complement the problem. 3 Summary and discussion The results show that the Sanmenxia smoke generally low soil organic matter content, available phosphorus content was relatively low potassium content of 155mg/kg or more. Rich in trace elements such as calcium and magnesium, zinc or 80% of the tobacco fields in the critical range for zinc, a serious shortage of supply of boron in tobacco fields. Southwest Tobacco (Tobacco Romer) low levels of available nitrogen, available phosphorus content is generally low, high levels of chloride ions. Based on soil test results and the spatial distribution of nutrients, a large number of elements of the Sanmenxia Tobacco fertilization principle of This. Propose that the existing 10:12:18's specialty fertilizer formula adjusted to 15:15:15, and add some fertilizer zinc, boron and other trace elements to balance soil nutrients. Southwest fertilizer should be higher than the eastern, western nitrogen applied per hectare should be controlled at 45-60kg, East nitrogen applied per hectare should be controlled at 30-45kg. In view of soil trace element supplement a longer period of time, therefore, tobacco production in the quarter, should topdressing boron,tory burch outlet, zinc, molybdenum, manganese and other trace elements. Over the years, Southwest Tobacco use a lot of manure on soil improvement to play a positive role, but because management is not strict, organic fertilizers often contain manure, pig manure contains a large number of inorganic salts such as (NaCI), the accumulated has led to increased chlorine content in soil, therefore, crude fertilizer management should pay close attention, while the basic tobacco fields protected areas,abercrombie ireland, to really implement the tobacco-based farming systems, crop rotation cycle in the cultivation of other crops to pay attention to application chlorine-fertilizer. Second,love bracelet cartier, we should pay attention to soil improvement, for some high pH of the soil, through appropriate selection of physiological acid nitrogen, potassium and acid superphosphate and other fertilizers, transplanting when the nest with facilities, environmental facilities, improve the micro-environment within the rhizosphere soil pH, humic acid fertilizer application while also reducing the pH of an effective way. References [1] Li Q K., Zhu Zhaoliang. Sustainable agricultural development in China's Fertilizer [M]. Nanchang: Jiangxi Science and Technology Press, 1998. [2] Kim Ji-yun. Plant Nutrition and Fertilizer Science, 1998,4 (1) :1-7. [3] Shi Yuanchun. Soil science of digital and information revolution [J]. Soil Science, 2000,37 (3) :289-295. [4] Pan Yuchun, Zhang Xue Xu, Chen Liping, et al. GIS-based variable-rate fertilization scale effects simulation system [J]. Journal of Agricultural Engineering, 2005,21 (6) :77-81. [5] Li-Na Jiang, Fu Jian-rong, Hao Fan set. G1S-based soil nutrient management technologies in crop-specific fertilizer application in the development and promotion, Zhejiang Agricultural University, 2005,17 (5) :257-262. [6] Liu Jianan, Liuxiang Feng, Wang climbing, and so on. Balanced fertilization in tobacco production in the applied research [J]. Modern Agricultural Science and Technology, 2006 (1) :53-54. [7] Zhang Li, Liu Jianli. China Tobacco Fertilizer Development and application of information systems [J]. Chinese Tobacco Science, 2003,9 (Suppl.): 1.8. [8] Bai Lu, Ji-Yun, Yang, et al. Precision agriculture and soil nutrient management [M]. Beijing: China Land Press. 2001:32 * 37. [9] Liu Jianli, Li Zhihong, Chen, et al. GIS Division used tobacco planting soil fertility and fertilizer divisions of [J]. Chinese Tobacco Science, 20o4, 10 (3) :19-24. [10] Zhang slightly, Xu Bunsen. Soil and Fertilizer [M], Zhengzhou: Henan Science and Technology Press, 1985. [11] Liu integrity, Zhang Xi standard. Sanmenxia soil [M]. Zhengzhou: Henan Science and Technology Press, 1996. [12] ZHAO Zhen-shan,tory burch outlet, Chen was China's tobacco production and practical technical guide 2005:135-173. [13] Guo-Shun Liu, Liu Jianli. China's tobacco production practical technology guide [C]. 2006:109-129. [14] Chen Ruitai, tobacco-growing divisions of the national study [R]. Tobacco-growing division of the National Collaborative Group, 1985. ∞. e Pi Pi 010 Indian ll collapse, r ★ ★ _. cultivation and modulation have been India v ∞ tj abnormal head to write In ∞ ★
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