| Effects of additional water and increased soil temperature on potato yields in Plastic-covered Ridge Rainwater-harvesting system |
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| DOI：10.7606/j.issn.1000-7601.2007.03.03 |
| Key Words: potato semiarid region plastic mulch rainwater harvesting of ridge and furrow yield |
| Author Name | Affiliation | | WANG Xiao-ling | College of Agronomy Henan University of Science and Technology, Luoyang,Henan 471003,China | | CHEN Ming-chan | College of Agronomy Henan University of Science and Technology, Luoyang,Henan 471003,China | | LI Feng-min | MOE Key Laboratory of Arid and Grassland Ecology Lanzhou University,Gansu,Lanzhou 73000,China | | LI You-jun | College of Agronomy Henan University of Science and Technology, Luoyang,Henan 471003,China |
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| Abstract: |
| Field experiment were carried out to study effects of plastic-covered Ridges with additional water and increased soil temperature on potato yields in plastic film mulching on ridge for rainwater-harvesting system.The experiment included four treatments:(1) 30 cm wide ridge covered with plastic film(P30),(2) 45 cm wide ridge covered with plastic film(P45),(3) 60 cm wide ridge covered with plastic film(P60),(4) soil surface flat without covering(P0).The results showed that plastic film mulching could increase soil temperature in ridges and prevent soil evaporation.Rainfall harvested in furrows infiltrated into below ridges,which made rainfall distribute in furrows and below ridges.Part of potato' roots distributed in ridges which were mulched with plastic film,and this caused potato grow rapidly because of additional water and increased soil temperature.Yield and water use efficiency in P30,P45 and P60 were significantly higher than in P0.However,water use in P30,P45 and P60 were significantly lower than in P0. |
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