摘要
Abstract
This study investigates the impact of mulched ridge cultivation on soil nutrient contents and potato production performance,aiming to provide a theoretical basis for soil fertility improvement,fertilizer use rates,and the development of rainwater harvesting cultivation techniques in drylands to support high-quality,high-yield potato production.With conventional ridging as control(CK),three treatments were established:full-film double ridge farming(FRF),spring film ridge with micro-furrow rainwater harvesting(SRF),and autumn film ridge with micro-furrow rainwater harvesting(ARF),to assess effects on soil available soil nitrogen(N),phosphorus(P),and potassium(K)contents,potato yield,and N,P and K fertilizer use rates.Results showed that compared with CK,all mulched treatments significantly increased available N,P and K contents in the 0 to 60 cm soil layer.ARF treatment achieved the highest 3-year average potato yield at 48 210.9 kg/ha,significantly higher than CK.Mulched ridge cultivation significantly improved partial factor productivity(PFP)of N,P and K fertilizers,with ARF being the most effective.Compared to CK,the average 3-year increases in PFP for N,P,and K fertilizers were 48.1%,43.2%,and 27.7%,respectively.Agronomic efficiency(AE)was highest under ARF in all years,and the average AE over three years followed the order as P>K>N.In conclusion,ARF has a clear advantage in improving soil fertility,fertilizer utilization,and potato yield,making it one of the preferred high-yield,efficient potato cultivation techniques in dryland regions.关键词
春秋覆膜/垄沟集雨/土壤养分/养分利用率/马铃薯Key words
Spring or autumn film mulching/Ridge-furrow rainwater harvesting/Soil nutrient/Nutrient utilization rate/Potato分类
农业科技
