肥料分层深施对旱作冬小麦光合生理特性及产量的影响  

Effects of Deep Fertilization on Photosynthetic Characteristics and Yield of Winter Wheat

作　　者：耿伟[1] 薛绪掌[1] 王志敏[2] 

机构地区：[1]国家农业信息化工程技术研究中心,北京100089 [2]中国农业大学农学与生物技术学院,北京100094

出　　处：《麦类作物学报》2006年第3期166-168,共3页Journal of Triticeae Crops

基　　金：北京市科技新星计划项目(H020821340130);国际科技合作重点项目(2003DF020008)

摘　　要：在充足底墒水、冬小麦生育期内旱作条件下,设计了4个不同土壤剖面层次施肥处理,即10cm土层施肥、10cm+30cm土层施肥、10cm+30cm+50cm土层施肥、10cm+30cm+50cm+70cm土层施肥,每个土壤剖面层次的施肥量相同,研究了分层施肥对旱作小麦光合特性及产量的影响。结果表明,增加深层次施肥可明显改善旱作冬小麦光合生理特性,提高产量。10cm+30cm+50cm分层施肥处理中,小麦旗叶净光合速率(Pn)、蒸腾速率(Tr)和气孔导度(Gs)都能保持在较高的水平,叶面积指数大,叶绿素含量高,可溶性物质含量低,产量也最高。With adequate irrigation before seeding and no irrigation during wheat growth, four fertilization treatments at different soil depths, i. e. , 10 cm, 10 cm＋30 cm, 10 cm＋30 cm＋50 cm, and 10 cm＋30 cm＋50 cm＋70 cm, were set up. The experiment showed that for the treatment of 10 cm＋30 cm＋50 cm fertilization, the net photosynthetic rate（Pn）.transpiration rate（Tr） and stomatal conductance（Gs ）of flag leaf, leaf area index and chlorophyll content were high, and soluble matter content of flag leaf was low, and the highest yield was also obtained with the treatment.

关 键 词：冬小麦 分层施肥 光合特性 产量 

分 类 号：S512.1[农业科学—作物学] S311