不同栽培模式下春玉米根系时空分布及生理特性研究  

Study of Root Distribution Space-time and Physiological Characteristics of Spring Maize at Late-growth Stage under Different Cultivation Patterns

作　　者：张玉芹[1] 杨恒山[1] 张瑞富[1] 高聚林[2] 刘志雄[3] 

机构地区：[1]内蒙古民族大学农学院,内蒙古通辽028042 [2]内蒙古农业大学农学院,内蒙古呼和浩特010019 [3]内蒙古农牧业科学院,内蒙古呼和浩特010031

出　　处：《华北农学报》2014年第1期122-128,共7页Acta Agriculturae Boreali-Sinica

基　　金：国家科技支撑计划项目(2012BAD04B00);内蒙古自治区高等学校科学研究项目(NJZY12124);内蒙古自然科学基金项目(2012MS0314);内蒙古民族大学博士启动基金项目(S264)

摘　　要：以金山27为供试品种,通过连续2年的田间试验,研究农户（ NH）、高产高效（ GCGX）、再高产（ ZGC）和再高产高效（ZGCGX）4种栽培模式下春玉米根系的时空分布及生理特性。研究表明,不同土层春玉米根重生育期内均呈先增高后降低的趋势,吐丝期达到最大值,各生育时期均为ZGCGX〉ZGC〉GCGX〉NH；不同土层春玉米根重占总根重的比例随生育进程呈单峰曲线变化,0-20 cm表现为NH〉GCGX〉ZGC〉ZGCGC,20-40 cm 和40-60 cm表现为ZGCGX〉ZGC〉GCGX〉NH；不同栽培模式吐丝期根系活力最大,乳熟期最小,均为ZGCGX〉NH〉GCGX〉ZGC；SOD和POD活性在吐丝期和乳熟期均为0-20 cm和20-40 cm土层ZGCGX〉NH〉GCGX〉ZGC,40-60 cm土层ZGCGX〉GCGX〉NH〉ZGC,MDA含量在吐丝期各土层均为ZGC〉GCGX〉NH〉ZGCGX,乳熟期为ZGC〉GCGX〉NH〉ZGCGX。The Jinshan 27 was grown under farmer cultivation （ NH） ,high yield and high efficiency （ GCGX） , higher yield （ZGC）and super-high yield and high efficiency （ZGCGX） condition in 2009 and 2010,to study the root distribution space-time and physiological characteristics of spring maize of different cultivation patterns. The re-sults showed that the root dry weight was first up then down with the growing process and the maximum appeared at silking stage,and ZGCGX〉ZGC〉GCGX〉NH in each growth stage. The percentage of root weight of different soil was a single apex with growing,its was NH〉GCGX〉ZGC〉ZGCGC in 0-20 cm soil layer and ZGCGX〉ZGC〉GCGX〉NH in 20-40,40-60 cm soil layer. The root vigor of different cultivation patterns was the maximum at silking stage,and the mixmum appear at milking stage,and ZGCGX〉NH〉GCGX〉ZGC. SOD and POD activity of root of four cultivation patterns was ZGCGX〉NH〉GCGX〉ZGC in 0-20,20-40 cm soil layer,and ZGCGX〉GCGX〉NH〉ZGC in 40-60 cm soil layer. MDA content of root of different soil layer was ZGC〉GCGX〉NH〉ZGCGX at silking stage,and NH〉ZGC〉GCGX〉ZGCGX at milking stage.

关 键 词：栽培模式 春玉米 根系 时空分别 生理特性 

分 类 号：S513.01[农业科学—作物学]