zihuamuxubozhongqianxuyaoduizhongzijinxingchuli,xiamianwomenyiqilailejiexiazihuamuxuzhongzidechangjianchulifangfa:
weilebaozhengzihuamuxuzhongzidechunjingduhezhengqidu,changliyongfengli、fuli、guoshaidengcuoshilaiqingxuanchuzhongzizhongdejunhe、chongying、zacaozhongzi、bingbiezhongziheqitazazhi。
杀灭紫花苜蓿种子中存在的菌核、成虫、虫瘿等活体,可以利用日晒、烘干、水烫、蒸气等物理方法。也可采用具有高效、高选择性、低毒、低残留和广谱等特性的化学药剂,对种子进行拌种、浸泡或熏蒸进行化学处理。化学处理一般在播种前的1~2周前进行。
紫花苜蓿种子具有硬实性,约在10%~20%之间,一般不做处理即可使用。当硬实率过高时,则需要对种子进行处理,常用方法有阳光暴晒、热水浸泡、物理碾磨、药剂处理等。其中,药剂处理的方法是:用浓硫酸浸种3分钟左右,或用万分之一的钼酸铵及万分之三的硼酸溶液浸种,浸种后立即用清水洗净即可。
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