施肥量和密度对马铃薯'本薯12号'产量品质的影响OA

The new potato variety'Benshu 12'was selected and developed by the Benxi Potato Research Institute.It was certificated for the registration of non major crop varieties by the Ministry of Agriculture and Rural Affairs of the People's Republic of China in 2024,with the number GPD potato(2024)210110.The purpose of this experiment was to explore the appropriate planting density and fertilizer application rate in order to achieve the high-yield potential of this variety.A two-factor split-plot experimental design was used to study the effects of planting density and fertilizer application rate on the yield and quality of'Benshu 12',and to determine the optimal combination of planting density and fertilizer application rate.The plant height was the highest and the number of main stems per plant was the highest when the fertilizer application rate was 100 kg/667m² and the planting density was 4 940 plants/667m2.The stem diameter was the thickest when the fertilizer application rate was 100 kg/667m2 and the planting density was 5 558 plants/667m2.The marketable tuber percentage was the highest when the fertilizer application rate was 54 kg/667m2 and the planting density was 4 940 plants/667m2.The combination of a fertilizer application rate of 100 kg/667m2 and a planting density of 4 940 plants/667m2 demonstrated the best performance,with the highest yield and a relatively high rate of marketable tubers.The combination of a fertilizer application rate of 100 kg/667m2 and a density of 5 558 plants/667m2 resulted in thick stems,ranked third in yield,and exhibited the best tuber quality.Therefore,for the'Benshu 12'variety,the recommended fertilizer application rate is 100 kg/667m2,and the planting density should be maintained between 4 940 and 5 558 plants/667m2.