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《Fertilizer & Health》 2020-01
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Analysis and Evaluation of Soil Nutrients in Main Grain Producing Areas of Highland Barley in Tibet

ZHANG Huaguo;Institute of Agricultural Resources and Environment, Tibet Academy of Agricultural and Animal Husbandry Sciences;  
In order to accurately understand and determine the soil nutrient abundance in the farmland area around the Yarlung Zangbo River in Tibet, a combination of field soil sample collection and indoor chemical analysis is used to determine the pH and nutrient content of farmland soil in 8 counties in 4 major highland barley production areas. Data statistics and analysis results show that the soil pH of 8 counties in 4 districts is relatively stable, basically between 6.7 and 7.4, which is more suitable for the growth of conventional field crops such as highland barley and rape; the soil organic matter content in Bailang and Jiangzi counties in Shigatse is relatively high(average 10.68 g/kg), followed by Nyingchi Mainling County and Nyingchi County, the soil organic matter content in Gongga County and Sangri County in Shannan, in Lhünzhub and Maizhokunggar counties in Lhasa is relatively lacking; except for the total nitrogen content, available phosphorus and available potassium are generally at deficient levels. The shortages in counties and districts around Lhasa are the most serious. According to the results of the study, high-yielding cultivation of highland barley in agricultural areas in Tibet should be based on increasing the use of farmyard organic manure and biological organic fertilizers, phosphorus and potassium fertilizers, and reducing the amount of nitrogen fertilizer applied to prevent soil compaction.
【Fund】: 西藏自治区财政厅专项(XZCZZH2016—2018[3])
【CateGory Index】: S158
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