中国农学通报2026，Vol.42Issue(8)：11-16,6.
宁夏干旱区双垄全膜沟播马铃薯种植密度的产量影响试验研究
Experimental Study on Yield Impact of Potato Planting Density Under Double Ridge Full Film Furrow Sowing in Arid Area of Ningxia
摘要
Abstract
To clarify the optimal planting density of potato in Tongxin County,Ningxia under the double ridge full film mulching and furrow sowing technology,and improve the water-saving and high-yield cultivation level of potato in arid areas,this study set five treatments with gradient densities from 2.25 to 5.25 plants/m2,systematically explored the regulatory effects of planting density on the growth period,agronomic traits and yield of potato,and analyzed the density adaptation law combined with the meteorological characteristics during the test period in the southern mountainous area of Ningxia.The results showed that planting density had no significant effect on the early vegetative growth process of potato,but significantly regulated the reproductive growth stage.The growth period was prolonged under Treatment 1(2.25 plants/m2),and maturity was advanced under Treatment 5(5.25 plants/m2);with the increase of density,the number of tubers per plant,tuber weight per plant and the rate of large and medium-sized tubers showed an extremely significant downward trend(P<0.001),while the yield showed a"first increase and then decrease"characteristic.Among them,3.00 plants/m2 was the optimal density,with a plot yield of 86.44 kg and a converted yield of 16379.40 kg/hm2.Meteorological adaptability analysis showed that precipitation was the core influencing factor for density regulation.The optimal density was 3.00 plants/m2 in normal,wet and slightly dry years,and needed to be reduced to 2.25 plants/m2 in extreme dry years;the planting density of potato in the southern mountainous area of Ningxia could be gradually adapted from 3.00 plants/m2 to 3.75 plants/m2 along the"north-central-south"precipitation gradient.The results of this study provide a scientific basis for the rational close planting of potato in Tongxin County and similar arid areas,and also an important reference for the integration and optimization of water-saving and high-yield cultivation technologies of potato in the southern mountainous area of Ningxia.关键词
双垄沟播技术/马铃薯/种植密度/农艺性状/产量Key words
double ridge furrow sowing technology/potato/planting density/agronomic traits/yield分类
农业科技引用本文复制引用
徐宇东,李海洋,杨建明,王桂芳,位改改..宁夏干旱区双垄全膜沟播马铃薯种植密度的产量影响试验研究[J].中国农学通报,2026,42(8):11-16,6.基金项目
固原市原州区科技研发计划项目"气候预报优化原州区露地蔬菜种植关键技术研究"(YK2025-39). （YK2025-39）
