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Chinese Agricultural Science Bulletin ›› 2013, Vol. 29 ›› Issue (3): 147-152.doi: 10.11924/j.issn.1000-6850.2012-0782

Special Issue: 马铃薯

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Effect of Different Film-covering Modes on the Yield and Soil Moisture of Dry Land Tillage Potato

  

  • Received:2012-03-08 Revised:2012-07-24 Online:2013-01-25 Published:2013-01-25

Abstract: The experiment, combining field experiment and laboratory analysis, was conducted to study yield components, water use efficiency and the change rule of soil moisture under the different film-covering mode, such as the traditional planting, harrowed bedding planting with film mulching, double ridge mulched completely by film, ridge mulched by film, ridge culture mulched by film and ridge side planting, and to identify the best film-covering mode under the dry land tillage potato of Wuchuan Inner Mongolia. It indicated that film-covering modes could increase the tuber yield, the single stub tuber number. Film-covering mode could increase the tuber yield and the water use efficiency by 6.71%-83.57% and 12.04%-135.36% respectively contrasted to the traditional planting. Under the one film-covering mode, drought-resistant agent could increase the tuber yield and the water use efficiency by 4.24%-37.11% and 0.59%-23.24% respectively. The conclusion from the change rule of soil moisture, showed that the film covering had the obvious rainwater harvesting, double ridge mulched completely by film was able to increase availably the soil water in 0-10 cm soil profile, the soil water of ridge culture mulched by film and ridge side planting in 20-40 cm soil profile remained at relatively high level. Drought-resistant agent had the obvious water holding effects, and could decrease soil water infiltration and made the water preserved in 0-40 cm soil profile.