中国马铃薯2025，Vol.39Issue(4)：300-304,5.DOI:10.19918/j.cnki.1672-3635.2025.04.007
N、K施肥时期及比例对膜下滴灌马铃薯生长发育及产量的影响
Effects of Nitrogen and Potassium Fertilizer Application Timing and Proportion on Growth,Development,and Yield of Drip-irrigated Potato under Plastic Mulch
摘要
Abstract
An experiment was conducted on the timing and proportion of nitrogen(N)and potassium(K)fertilizer application under the condition of drip irrigation under plastic mulch in order to explore the effects of fertilizer on the growth,development,and yield of potatoes.Using'Xindaping'as the experimental material,seven N and K fertilizer treatments were set up,with the control(CK)being basal application of 100%N and 100%K.Different fertilizer application timing had no effect on potato emergence and phenological stages.However,the plant height at the full flowering stage under the treatment of basal application of all fertilizers(CK)was significantly lower than that of treatments with"basal application+topdressing".All treatments generally showed a trend of lower per-plant yield with higher basal application of fertilizer.The per-plant yield of the T2 treatment(basal application of 50%N and 50%K fertilizer,with topdressing of 15%N and 5%K at the seedling stage,15%N and 15%K at the budding stage,10%N and 5%K at the initial flowering stage,5%N and 25%K at the full flowering stage,and 5%N at the final flowering stage)was significantly higher than that of the CK treatment.The treatments with 50%and 60%basal fertilizer application showed higher marketable tuber percentages and tuber yields than the CK treatment,with T2 performing the best.Its yield reached 65 067 kg/ha,representing a 21.86%increase compared to the control.Therefore,the T2 treatment could be applied as the optimal fertilizer allocation in local potato cultivation.关键词
马铃薯/肥料配比/生长发育/产量Key words
potato/fertilizer proportion/growth and development/yield分类
农业科技引用本文复制引用
师丽丽,张小静,闫承宏,唐彩梅,张丽娟,袁安明,陈富..N、K施肥时期及比例对膜下滴灌马铃薯生长发育及产量的影响[J].中国马铃薯,2025,39(4):300-304,5.基金项目
甘肃省重点研发计划(24YFNJ003) （24YFNJ003）
定西市重点技术攻关专项(DX2024AZ15). （DX2024AZ15）
