内蒙古阴山北麓地区马铃薯施肥模式研究.

In order to understand the current situation of potato fertilization and its main influencing factors in the main potato producing areas of Inner Mongolia, in 2019, a survey was conducted on the fertilization of 1 090.2 hm² potato in 215 households in a typical county at the northern foot of Yinshan Mountain, Inner Mongolia. The results showed that the farmers who applied chemical fertilizer alone accounted for 63.8% of the surveyed households and 20.6% of the surveyed area. Organic inorganic fertilizer with the number of users accounted for 20.9%, the area accounted for 53.9%. Fertilization mode was mainly affected by irrigation conditions and planting scale. The application amount of organic fertilizer (physical dry base) was mainly 15.0-22.5 t/hm² in dry farming area and small per capita planting area, and the amount of chemical fertilizer (total amount of pure nutrients) was concentrated in the range of 0-75 kg/hm². The amount of organic fertilizer applied by farmers in irrigated farmland and large-scale operation was mainly 45-60 t/hm², and the amount of chemical fertilizer was greater than 750 kg/hm². The N: P2O3: K2O ratio in dry land was 100.0: 82.2:64.4 (t/hm²). Under irrigation condition, N: P2O3: K2O was 300.4: 265.2: 236.3 (kg/hm²). On the whole, the fertilization of potato in the northern foothills of Yinshan is dominated by single application of chemical fertilizer, and the mode of combined application of organic fertilizer and chemical fertilizer is diversified and less normative. [ABSTRACT FROM AUTHOR]