中国农业科学2011，Vol.44Issue(10)：2005-2012,8.DOI:10.3846/j.issn.0578-175.2011.10.005
砂姜黑土区小麦玉米秸秆全量还田对玉米抗倒性能的影响
Effects of Wheat and Maize Straw Returned to the Field on Lodging Resistance of Maize in Lime Concretion Black Soil Region
摘要
Abstract
[ Objective ] The objective of the experiment is to study the effects of straw returned to the field on lodging resistance of maize in lime concretion black soil region. [Method] Maize cultivar Zhengdan 958 was grown in this plot experiment to investigate the effects of straw returned to the field on lodging resistance of maize. [Result] The results showed that wheat or maize straw returned to the field could increase aerial root number, root number in 0-30 cm soil layer and root weight, so as the plant height and fresh weight of maize. After straw returning, the length, diameter, dry weight and ratio of dry weight to length of internodes from bottom 3rd to 7th were increased especially the stalk crash strength and stalk rind penetrain strength of bottom internodes were significantly increased at silking and filling stage. In addition, the root lodging coefficients were a significantly decreased while the lodging resistance indexes were significantly increased. The correlation coefficient showed that there was significant positive correlation between root lodging coefficient and root lodging percentage while there was a negative significant correlation among root lodging coefficient, fresh weight, root weight and stalk crash strength of bottom 3rd internode. The relation between total lodging percentage and internode length was a very significant post ive correlation while that among total lodging percentage and the dry weight, plumpness, crash strength and rind penetrain strength of intemodes were a significant negative correlation. [ Conclusion ] Therefore, under the condition of wheat and maize straw returned to the field, the root lodging percentage and stalk breaking percentage of maize would be decreased while the grain yield would be increased.关键词
夏玉米/砂姜黑土/秸秆还田/抗倒性能Key words
summer maize/ lime concretion black soil/ straw returned to the field/ lodging-resistance引用本文复制引用
沈学善,李金才,屈会娟,魏凤珍,张一,武文明..砂姜黑土区小麦玉米秸秆全量还田对玉米抗倒性能的影响[J].中国农业科学,2011,44(10):2005-2012,8.基金项目
囝家科技支撑计划项目(2009BADA6803,2009BADA6802)、农业部行业专项(201083827) （2009BADA6803,2009BADA6802）
