【作者】 蔡春鹏；

【导师】 吴明根； 朴仁哲；

【作者基本信息】 延边大学 ， 作物栽培学与耕作学， 2003， 硕士

【摘要】 为解决轮叶党参栽培过程中种子出苗率低及除草难的问题，对轮叶党参休眠的打破及适宜化学除草剂的筛选进行了探讨。试验结果表明：轮叶党参种子具有不完全休眠特性。用赤霉素处理可显著提高种子发芽率。在赤霉素处理浓度760mg／L处理时间125分钟条件下，种子第8天可获得最高发芽率80％左右。敌草胺与除芽通的混剂处理是轮叶党参实生苗幼苗期杂草防除的较佳除草剂处理组合。室内条件下，敌草胺在2.0kg／ha与除芽通在2.0kg／ha的混剂处理条件下对杂草的防效可达到90％。敌草胺与除芽通在低剂量处理条件下有累加效应，高剂量处理条件下有独立效应。该混剂药效发挥的适宜土壤湿度范围是70％左右。百草枯是一年生轮叶党参栽培地杂草防除的较佳除草剂，在轮叶党参株高达50-100cm时进行底部定向施用百草枯1.0 kg／ha，对杂草的综合防效可达到90％以上。更多还原

【Abstract】 We studyed on breaking dormant and screening preferent chemical herbicides of Codonposis Lanceolata Bentn.et Hook.f. in order to solve the low rate of germination and difficulty of weed control during the cultivation of Codonposis Lanceolata Bentn.et Hook.f.. The result showed:the seeds of Codonposis Lanceolata Bentn.et Hook.f. have incomplete dormancy. Gibberellin can improve the germination percentage significantly. The seeds can acquire the highest germination percentage 80% or so if treated with 760mg/L gibberellin for 125 minutes. The herbicide mixtures of Napropamide and Pendimethalin is fairly good for the weed control of seedling Codonposis Lanceolata Bentn.et Hook.f.. The pot experiment showed that the herbicide effect can reach 90% if treated with the constitute of Napropamide 2.0kg/ha and Pendimethalin 2.0kg/ha. The two herbicides expressed additive effect in low dosage but independent effect in high dosage. The suitable soil relative humidity extent to the constitute is 70% or so. Paraquat is good herbicide for the weed control of annual Codonposis Lanceolata Bentn.et Hook.f.. We can sprayed Paraquat (1.0kg/ha) to them by bottom treatment when the height of annual Lance have Asiabell reached 50~100cm,and the integrated control effect can reach more than 90%.更多还原