中国农学通报2025，Vol.41Issue(36)：21-27,7.
地膜覆盖和栽培密度对宁德丘陵山地'福宁紫4号'紫甘薯品种农艺性状和结薯习性的影响
Effects of Plastic Film Mulching and Planting Density on Agronomic Trait and Tuber-setting Habits of Purple Sweet Potato Variety'Funingzi No.4'in Ningde Hilly Area
摘要
Abstract
To explore the effects of different yield-increasing cultivation measures on the growth and development of sweet potato,a two-factor randomized block design was used to study the effects of plastic film mulching and planting density on the agronomic trait and tuber-setting habits of purple sweet potato variety'Funingzi No.4'in Ningde hilly area.The results showed that plastic film mulching could promote the growth of the aboveground part of sweet potato,and then improve the yield,commodity potato rate and quality of sweet potato.Under the condition of planting density of 52500 plant/hm2,the average number of tubers per plant increased by 1.65,the fresh weight per plant increased by 34.62%,the large potato rate increased by 10.45 percentage points,the fresh potato yield per unit area increased by 33.87%,the commodity potato rate increased by 7.72 percentage points,the anthocyanin content increased by 7.2%,and the dry rate increased by 2.01 percentage points.Excessive or insufficient planting density was not conducive to the improvement of commercial tuberous root rate,fresh potato yield and quality.There were significant interactions between plastic film mulching and planting density on the number of branches,the longest vine length,the fresh weight of stems and leaves per plant,the number of tubers per plant,the fresh weight per plant,the fresh yield per unit area,the rate of large tubers,the rate of small tubers and the rate of commercial tubers of'Funingzi No.4'.The combination of plastic film mulching and suitable planting density measures could better promote the yield,commercial tuberous root rate and quality of'Funingzi No.4'.Based on the characteristics of agronomic trait and tuber habits of'Funingzi No.4'in the growth process in Ningde hilly and mountainous areas,plastic film mulching should be selected in spring cultivation and production,and the planting density of 52500 plants/hm2 is more suitable.关键词
地膜覆盖/种植密度/福宁紫4号/农艺性状/紫甘薯/宁德丘陵山地Key words
film mulching/planting density/Funingzi No.4/agronomic trait/purple sweet potato/Ningde hilly area分类
农业科技引用本文复制引用
蒋元斌..地膜覆盖和栽培密度对宁德丘陵山地'福宁紫4号'紫甘薯品种农艺性状和结薯习性的影响[J].中国农学通报,2025,41(36):21-27,7.基金项目
福建省科技厅星火项目"高产抗病紫甘薯新品种福宁紫4号繁育及示范推广"(2023S0068). （2023S0068）
