Journal of Northern Agriculture ›› 2019, Vol. 47 ›› Issue (4): 66-72.doi: 10.3969/j.issn.2096-1197.2019.04.12

• Corp cultivation·Soil and fertilizer·Water-saving irrigation • Previous Articles     Next Articles

Effects of pre-seedling drip irrigation on water utilization and yield of potato

REN Yongfeng1,2, LU Zhanyuan1, NIE Jing1, CUI Yan1, AN Hao1, GAO Yu1, ZHAO Peiyi1   

  1. 1.Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;
    2.Inner Mongolia University,Hohhot 010021,China
  • Received:2019-04-22 Online:2019-08-20 Published:2019-12-10

Abstract: In order to solve the production problems of low water use efficiency and unstable yield of potato,different drip irrigation treatments were carried out before potato seedlings,to monitor the accumulation of plant matter,the change of leaf area index,the water use and yield formation under the plastic film mulching and the non-plastic film mulching drip irrigation.The results were as follows:(1) the dry matter accumulation and the leaf area index of ridging and plastic film mulching treatment were significantly higher than those of ridging and non-plastic film mulching treatment;the dry matter accumulation was the highest under WF4 and W4 (225 m3/hm2) treatments,which were 162.0%-169.5% and 59.9%-77.4% higher than control,respectively.The leaf area index of WF3(180 m3/hm2) and W3 was the highest,with 94.2% and 60.2% higher than control,respectively.(2) the flowering period of potato could be prolonged by increasing the amount of irrigation before seedling,and the flowering period of potato under 225 m3/hm2 and 180 m3/hm2 drip irrigation was 9-10 days longer than control.(3) the soil moisture content and the soil water storage of 0-40 cm were the highest in WF4 and W4,and the plastic film mulching treatments were higher than those without plastic film mulching;the highest potato yield and the water use efficiency were W3 and WF3,of which the yield was 13.8% and 27.8% higher than control,respectively,and the water use efficiency was 5.4% and 25.0% higher than control,respectively.The yield and the water use efficiency of WF3 were 16.1% and 27.4% higher than W3,respectively.Therefore,the adoption of the plastic film mulching planting method,and the proper drip irrigation before seedling can promote the potato yield and the water use efficiency.

Key words: Potato, Drip irrigation, Plastic film mulching, Water use efficiency, Yield

CLC Number: 

  • S519