西北旱作区不同地膜覆盖种植方式对谷子生长发育的影响.pdf

31 1 Vol. 31 No. 1 2013 1 Agricultural Research in the Arid Areas Jan . 2013 董孔军, 杨天育, 何继红, 任瑞玉, 张 磊 ( , 730070) : 选用垄膜覆盖沟播全膜双垄沟播全膜平铺穴播全膜平铺沟播等4 种地膜覆盖方 , 研究了不同地 膜覆盖种植方 对谷子光合作用生长速度及其产量的影响结果表明, 地膜覆盖种植提高了谷子生长期间的净 光合速率和水分利用效率, 在抽穗期, 地膜覆盖种植方 的光合速率比露地种植的高9 . 8% ~ 28. 5% , 水分利用效 率比露地的提高3. 0 % ~ 18. 1% ; 同时, 地膜覆盖种植明显加快了谷子生育期间的生长速度, 在苗期至成熟期, 地膜 覆盖种植方 的平均生长速度较露地快28. 7% ~ 35. 5% 地膜覆盖种植方 增产显著, 产量在3 429. 00 ~ 4 233. 60 kg#hm- 2之间, 比露地沟播种植方 增产30. 87% ~ 61. 57 % : 谷子; 覆盖方 ; 水分利用效率; 产量 : S515 . 048 : A : 1000-760 1( 2013) 01- 0036-05 Effects of different film mulching and planting patterns on growth and development of millet in dry-farming area of northwest China DONG Kong-jun, YANG Tian-yu, HE J-i hong, REN Ru-i yu, ZHANG Lei ( Crop Institute, GansuAcademy of Agricultural Sciences, Lanzhou, Gansu 730070, China) Abstract: The experimen was conduc ed o inves iga e he effec s of differen film mulching and plan ing pa erns on pho osyn hesis, grow h ra e and yield of mille by adop ing 5 rea men s, i. e. , fla plan ing and no plas ic film mulching ( NM ) , ridge f ilm mulching and furrow seeding ( RFFS ) , full plas ic film mulching and furrow seeding ( FFFS) , full plas ic film mulching and bunch plan ing ( FFBP) , and full plas ic film mulching on double ridges and plan ing in ca chmen furrow s ( FFDRF) . The resul s showed ha , he film mulching pa erns improved he ne pho osyn- he