农业工程学报2012，Vol.28Issue(18)：127-133,7.DOI:10.3969/j.issn.1002-6819.2012.18.019
向日葵和马铃薯间作模式的生产力及水分利用
Productivity and water use in sunflower intercropped with potato
摘要
Abstract
In this paper, we analyzed water uptake and water use of plant under different intercroppings, probed the mechanism that intercropping can increase yield, propounded optimal intercropping model that suited for the local ecological environment, and provided some theoretical basis. Field experiments were carried out from 2009 to 2010 in Wuchuang, Inner Mongolia, and water uptake and water use under different potato/sunflower intercroppings was studied. Results showed that the two potato/sunflower intercrops had yield advantage. The land equivalent ratios (LER) of two rows potato and 2 rows sunflower (2P:2S) and four rows potato and four rows sunflower (4P:4S) intercropping systems ranged from 1.2 to 1.3. That for 4P:2S was highest (1.26), had a significant advantage in land productivity. The actual evapotranspiration (ET) of potato between intercropping and sole systems was not significantly different. The same results were existed for sunflower. Comparison with water use efficiency (JVUE) of sole potato, although the WUE of intercropped potato in 2P:2S intercrop and 4P:4S intercrop decreased 81% and 66%, but the WUEs of intercropped sunflower in two intercrops were as the same as that of the monoculture, therefore, the WUEs of the intercropping systems at field level were increased. Water use equivalent ratios (WER) of two intercrops ranged from 1.2 to 1.3, especially, in 4P:4S intercropping system were 1.3, indicated that this intercropping system had highest advantage in water use. It is concluded that the potato/sunflower intercrops, especially for 4P:4S intercrop, improve the land productivity and water use efficiency, and could be applied in sustainable development in the region of rainfed agricutlure.关键词
蒸散量/水分/土壤/马铃薯/向日葵间作/水分当量比/土地当量比/风障Key words
evapotranspiration/ water content/ soils/ potato/sunflower intercropping/ water equivalent ratio/ land equivalent ratio/ windbreak分类
农业科技引用本文复制引用
董宛麟,张立祯,于洋,苟芳,赵沛义,妥德宝,潘学标..向日葵和马铃薯间作模式的生产力及水分利用[J].农业工程学报,2012,28(18):127-133,7.基金项目
国家973计划课题"作物多样性影响土壤地力的根际生态过程"(2011CB100405) （2011CB100405）
国家支撑计划项目"旱作农业关键技术研究与示范"(2012BA009B00) （2012BA009B00）
