【摘要】 为了研究青海山旱地有机肥不同施用量对青海主栽品种“青薯9号”和“下寨65”干物质分配及产量的影响，明确该地区有机肥最佳施用量，为提高马铃薯栽培水平及农户种植效益提供理论依据。于2021年开展有机肥不同施用量试验，施肥水平为9 000 kg/hm²（T₁）、7 500 kg/hm²（T₂）、6 000 kg/hm²（T₃）、4 500 kg/hm²（T₄）、3 000 kg/hm²（T₅）,测试其不同处理不同生育期马铃薯总干物质积累、各个器官干物质分配量及产量。结果表明，2个主栽品种在不同生育期干物质积累量呈先增加后降低的趋势，现蕾期至膨大期干物质增长速率最大；有机肥使用量为4 500 kg/hm²,2个品种在膨大期积累量均达到最大值。为了获得高产与高效，推荐有机肥施用量4 500 kg/hm²,主导品种较其他处理增产较显著，较T₅处理分别增产46.05%和45.70%,并获得最高的经济效益。更多还原

【Abstract】 In order to study the effects of different application rates of organic fertilizers on the dry matter distribution and yield of the main Qinghai cultivars ‘Qingshu 9’ and ‘Xiazhai 65’, and to clarify the optimal application rate of organic fertilizers in this area, in order to provide theoretical basis for improving the level of potato cultivation and farmers planting benefits. The test was carried out in 2021 with different application rates of organic fertilizers. The fertilizer levels were 9 000 kg/hm²（T₁）, 7 500 kg/hm²（T₂）, 6 000 kg/hm²（T₃）, 4 500 kg/hm²（T₄）, 3 000 kg/hm²（T₅）, to test the accumulation of total dry matter, the distribution of dry matter of each organ and the yield of potatoes in different growth stages of different treatments. The results showed that the dry matter accumulation of the two main cultivars in different growth stages showed a trend of first increase and then decrease, and the growth rate of dry matter was the largest from bud stage to expansion stage. The amount of organic fertilizer used was 4 500 kg/hm², and both varieties had reached their maximum accumulation during the expansion period. In order to achieve high yield and efficiency, it was recommended to apply 4 500 kg/hm² of organic fertilizer. The dominant variety had a significant increase in yield compared to other treatments, with an increase of 46.05% and 45.70% respectively compared to T₅ treatment, and achieved the highest economic benefits.更多还原