摘要
夏玉米玉米 5叶期行间进行机械化深松表明 ,间隔 12 0cm深松比间隔 6 0cm深松增加株高、茎粗、根层数、茎节数、展开叶数、叶面积指数 ,降低穗位高。从深松深度看 ,拔节期深松对植株的生长有一定的抑制效应 ,尤其是深松 2 0cm ,株高降低 ,茎节数、展开叶、可见叶数及叶面积指数均比对照降低。间隔 12 0cm深松 30cm处理可以提高叶面积指数 ,增加株高、茎节数、茎粗和降低植株的穗位高度 ,土壤蓄水保墒效果较好 ,产量和水分利用效率最高分别比对照提高 8 86 %、 6 5 9%。
The experiment of subsoiling in the growth of summer corn showed that subsoiling at 120 cm interval, comparares with 60 cm interval, could increase plant height, stem diameter, number of root layers, nodes, outspread leaves, leaf area index, and reduce height of spike. In term of deep cultivation, subsoiling had some certain negative effects on plant growth in the jointing stage, especially the depth of 20 cm cultivation reduce plant height, nodes, spread leaves and leaf area index in comparation with contrast treatment, so the combination of 120 cm interval and 30 cm depth improved leaf area index, plant height, nodes, stem diameter and reducedd height of spike,was 30 cm at 120 interval during the period of 5 leaves couldimprove leaf area index, and increase plant height, nodes, plant stem diameter, soil water store and reduce the height of spike, and increased yield and Water use efficiency by 8.86%, 6.59%,respectively,comparaed with non-subsoiling treatment.
出处
《中国农学通报》
CSCD
2003年第4期40-43,共4页
Chinese Agricultural Science Bulletin
基金
河南省农业重大科技攻关项目 (9910 30 2 12 )
