CAJ | 학술논문

试验选用先玉335和军单8两个品种,设70、65、60、50 cm 4个行距水平,研究不同行距种植对玉米产量及光合作用影响的机制.结果表明:各处理间产量存在差异,70 cm和50 cm处理高于65 cm和60 cm处理,形成产量差异的主要因素是秃尖长度;70 cm和50cm处理在生育后期较其他处理提高了穗位叶叶片的光合速率(Pn),并且保持了较高的叶绿素含量,延迟了叶绿素的分解.说明不同行距处理可影响生育后期叶片活性,表现为光合速率的差别,最终影响秃尖长度,形成产量差异.
시험선용선옥335화군단8량개품충,설70、65、60、50 cm 4개행거수평,연구불동행거충식대옥미산량급광합작용영향적궤제.결과표명:각처리간산량존재차이,70 cm화50 cm처리고우65 cm화60 cm처리,형성산량차이적주요인소시독첨장도;70 cm화50cm처리재생육후기교기타처리제고료수위협협편적광합속솔(Pn),병차보지료교고적협록소함량,연지료협록소적분해.설명불동행거처리가영향생육후기협편활성,표현위광합속솔적차별,최종영향독첨장도,형성산량차이.
In order to characterize the effect of maize row spacing to its photosynthetic performances and yield, two different varieties, Xianyu335 and Jundan8 and four row spacing, 70 cm, 65 cm, 60 cm and 50 cm were used in this study.The results showed that the yields of 70 cm and 50 cm row spacing were superior to the treatments of 65cm and 60 cm.It was found that the length of barren ear tip was the major factor to the differences of yield.The Pn and chlorophyll content of ear leaf increased in the treatments of 70 cm and 50 cm row spacing in later period of maize and degradation of chlorophyll delayed.These results suggested that the row spacing had an effect on the activity of leaf in the later period, which manifested as the differences of Pn.It impacted the length of barren ear tip, which affected yield significantly.