Effects of different cultivation methods on soil moisture,temperature and potato yield

WANG Ping; CHEN Juan; WANG Lei; LIU Shanxia; HU Jianping

doi:10.16861/j.cnki.zggc.2024.0596

Abstract：Using the potato variety Jizhangshu 12 as the test material,a randomized block design was adopted to investi-gate the effects of three mulching methods[ridging with black plastic film(F),ridging with liquid film(Y),and ridging without mulch(L)]under drip irrigation(W)and non-irrigated(D)conditions on soil moisture,temperature,potato growth,and yield.The yield increasing potential of potato under drip irrigation conditions was analyzed,and the optimal planting method for potato was determined.The results showed that under different planting methods,both drip irrigation and mulching advanced the phenological stages of potato.Compared with to non-irrigated conditions,dirp irrigation advanced the maturity period by 6-9 days.Compared with traditional open field cultivation,black plastic film and liquid film mulching promoted seedling emergence by 15 days and 2 days,respectively,and advanced maturity by 2-7 days.Compared with open field cultivation,mulching had significant warming and moisture-retaining effects,and black plastic film had the best effect.Plant height,stem diameter,leaf area index,SPAD,tuber number per plant,and yield of potato were all significantly positively correlated.The planting method significantly influenced potato growth.Compared with the D treatment,the W treatment significantly increased the average number of large tubers,yield,and marketable tuber rate by 109.74％,138.47％,and 145.95％,respectively.Compared with the L treatment,the F and Y treatments increased yield by 42.65％-67.28％and 11.34％-14.83％,respectively.In conclusion,under drip irrigation,both black plastic film and liquid film mulching had warming,drought resistance,and moisture conservation,which could promote potato seed-ling emergence and maturation.Among them,the combination of drip irrigation with black plastic film mulching(WF)showed the best performance in promoting plant growth and yield,making it a suitable cultivation model for promotion in dry farming areas.