---

作 者 ：钱希

期 刊 ：生态学报 1986年 6卷 1期 页码：35~42

关键词：杂；

摘 要 ：1979—1985年,对苏北地区麦田主要恶性杂草幼苗的生态习性进行了研究,猪殃殃,麦家公,野燕麦、大巢菜等种子的最适发芽温度分别为10℃、10—15℃、15℃、20℃;种子发芽起点温度分别为1.10±0.29、-0.46±1.29、0.06±3.09和3.54±2.42℃,均低于小麦的起点发芽温度(1—2℃)。种子发芽有效积温分别为87.04±2.54(℃)、133.70±16.53(℃)、84.24±15.87(℃)和58.66±10.91(℃),均高于小麦种子发芽的有效积温(50℃)。田间调查,猪殃殃等麦田杂草出苗,幼苗生长对温度及历期的要求与播种期关系极密切,一般比小麦迟出苗1—8天,但出土后的生长势很快超过小麦,且有播期不同而分批出土为害的习性。用苯达松防除猪殃殃;用野麦畏,苯达松防除麦家公;用野麦畏、禾草灵、野燕枯防除野燕麦;用苯氧乙酸类除草剂防除大巢菜等阔叶杂草,并将其消灭在苗期阶段,可取得显著的灭草增产效果。

Abstract:In the wheatfield of the North Jiangsu Province, there are weeds of 14 families and 31 species, in which main harmful weeds are Madder family‘s Catchweed bedstrau, Chinese gromwell f amily s corn gromwell, Leguminosae family‘s Common vetch and Grass family‘s Wild oat. From 1979-1985, the ecological characteristics of seedling of 4 species of weeds were studied, The threshold temperature (℃) of the germination of Catchweed bedstrau, corn gromwell, wild oat and of Common vetch are 1.10±0.29, - 0.46 ±1.39,0.06...

---