米麦间作玉米叶片可溶性糖含量变化

Changes of Soluble Sugar in Maize Leaves under Maize Wheat Intercropping

在吉林省中西部具有代表性的４１米麦间作地块，对玉米在不同生育时期及同一时期不同层次叶片的可溶性糖进行了研究。结果表明，在大喇叭口期，间作玉米叶片的可溶性糖含量低于清种，灌浆期高于清种，于乳熟期达最大值。不同层次叶片可溶性糖含量变化表现为，乳熟期上层叶＞中层叶＞下层叶；灌浆期清种玉米为中层叶＞上层叶＞下层叶，间作玉米为下层叶＞中层叶＞上层叶；大喇叭口—抽雄期，可溶性糖含量变化不规律。

The results showed that the content of soluble sugar under intercropping was lower than sole cropping at joining stage. But it were higher than sole cropping at filling stage. Intercropping and sole cropping was all appeared maxium value at milking stage. At millering stage, soluble sugar content of differenrt layer leaves were up layer>mid leaves>low layer. At filling stage, soluble sugar of low layer leaves under intercropping were higher than mod-layer and maxium value were measured in up layer. Under sole cropping, soluble sugar content of mid layer leaves were higher than up layer and maxium value were measured in low layer. From big joining to tassle stage, the changes of soluble sugar were irregulatr.