垄沟集水种植对土壤有效蓄水量及谷子生长、光合特性的影响  

Effects of water retaining planting technique under ridge and ditch micro-collection on growth,photosynthetic rate and transpiration rate of dry-land foxtail millet

作　　者：李永平[1] 刘世新[1] 贾志宽[2] 聂俊峰[2] 曹秀霞[1] 李明芳[1] 

机构地区：[1]固原市农业科学研究所,宁夏固原756000 [2]西北农林科技大学干旱半干旱研究中心,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2007年第10期163-167,共5页Journal of Northwest A&F University(Natural Science Edition)

基　　金：国家科技支撑项目(2006BAD29B03);宁夏科技攻关项目(200602-09)

摘　　要：以谷子为供试材料，在半干旱偏旱区研究了不同垄沟集水带型对土壤有效蓄水量、不同生育阶段生长量、生长速率和植株光合系统各特征值的影响。结果表明，垄沟集水种植方式蓄水作用效果明显，其中以垄沟比60：60带型效果最好；谷子垄沟集水种植主要经济性状指标值均较露地种植对照（CK）高，平均穗长、小穗数和穗粒重分别较对照增加3．9～5．4cm、9．8～16．8个和5．20～5．25g；垄沟集水种植谷子的叶片光合速率（Pn）、蒸腾速率（Tr）、气孔导度（Rs）和水分生产效率（WUE）值分别较露地种植（CK）提高31．83％，42．62％，24．50％和9．6％。The effects of different ridge and ditch micro-collection strip on sou moisture,growth increasement,growth rate and parameters of photosynthesis of foxtail millet were investigated in semi-arid areas. The results showed that there were obvious effects observed on the water amount stored in cropland by the furrow micro collection compared with normal ground planting （CK）. Among those, the optimal ridge and furrow ratio was 60 ： 60;the growth amount of single plant was increased by 46.7 % compared with normal ground planting;the leaf photosynthesis （Pn）, transpiration rate （Tr） and stomata conductance （Rs） of plants were increased by 31.83% ,42.62% and 24.50% than the ground planting （CK）,respectively.

关 键 词：旱地谷子 垄沟集水 蓄水量 生长量 光合特性 

分 类 号：S352.54[农业科学—作物栽培与耕作技术]