Analysis Of The Nutrient Absorption And Quality Characteristics Of Potato In Different Planting Regions

According to the different planting areas in Ningxia, The model of potato optimized fertilization was carried out in Hongsibao county (Yanghuang irrigation area) and Yuanzhou county (rainfed agricultural area) at 2014, the potato optimization fertilization demonstration and in the mature period of potato in the main producing areas of China sampling survey, dry matter accumulation and nitrogen, phosphorus and potassium nutrient content of different planting areas of potato on potato growth period, on nutrient uptake and accumulation rules and to all the main areas of potato quality evaluation, so as to provide basis for rational fertilization of potato in Ningxia Hui Autonomous Region and the determination of the Ningxia potato production area. The results show that:1、Yellow River Pumping Irrigation District in Ningxia potato dry matter and N, P, K accumulation with the change of growth period with opening to the parabolic function of growth. Accumulate the most tuber enlargement stage and times for the starch accumulation stage, the fresh tuber yield to 22.01 t/hm2; potato roots and underground stems and leaves in the absorption of nitrogen, phosphorus and potassium accounted for each organ of the same period total accumulated in proportion to the amount decreased with the growth stage, stems in the absorption of nitrogen, phosphorus and potassium accounted for each organ of the same period total accumulated in proportion to the amount with the growth stage increased first and then decreased, but the tuber absorption accumulation of nitrogen, phosphorus and potassium content increased with the growth period. A mature component accumulates in the tubers accounted for more than 70% of the whole plant.2、Rain in Southern Ningxia raise agricultural planting area of potato dry matter and N, P, K accumulation with the change of growth period accorded with logistic growth function. Accumulate the most tuber enlargement stage and times for the starch accumulation stage, the fresh tuber yield was 39.42 t/hm2; potato roots and underground stems in the absorption of nitrogen, phosphorus and potassium accounted for each organ of the same period total accumulated in proportion to the amount decreased with the growth stage, leaf and stem in the absorption of nitrogen, phosphorus and potassium accounted for over the same period the organ total accumulated in proportion to the amount with the growth stage increased first and then decreased, but the tuber absorption accumulation of nitrogen, phosphorus and potassium content increased with the growth period. A mature component accumulates in the tubers accounted for more than 55% of the whole plant.3、In 15 samples of potato quality best, Wulanchabu City, Inner Mongolia, followed by Dingxi City, Gansu Province, Ningxia southern mountain area, the eastern part of Qinghai Province and Northern Shaanxi, the planting areas are suitable for potato planting in a large area.