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本文研究盾负泥虫对鸭跖草的控制作用、取食行为和鸭跖草的组织结构。在６ｍ３的笼罩内栽３０株鸭跖草，以２０对盾负泥虫取食，控制率可达９５％以上。盾负泥虫只大量取食鸭跖草的幼茎、嫩叶，对其老茎、老叶、花和果实不取食。认为是由于鸭跖草的幼茎、嫩叶中有较多的粘液细胞、草酸钙针晶束和糖分，而老茎、老叶的粘液细胞已失去分泌功能，草酸钙针晶束和糖量显著减少。花和果实中未发现有粘液细胞，只有少数草酸钙针晶细胞
In this paper, the control effect of shield negative mound on Commelina communis, feeding behavior and the constitution of Commelina communis were studied. In 6m3 shrouded planted 30 Commelina to 20 pairs of shield negative moth feeding, the control rate of up to 95%. Shield negative mud worm only juvenile Commelina take a lot of young stems, young leaves, its old stems, old leaves, flowers and fruits do not feed. It is thought to be due to the young stems of Commelina communis, there are more mucous cells in the young leaves, the crystal lattice of calcium oxalate and sugar, while the mucus cells of old stems and old leaves have lost the secretion function, Significantly reduced. Mucous cells were not found in flowers and fruits, with only a few calcium oxalate needle cells