Research on application techniques for a novel herbicide 10% ZJ0273 EC on transplanted rapes
Research on application techniques for a novel herbicide 10% ZJ0273 EC on transplanted rapes
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发表时间：
2006
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通讯作者：
Tang Qinghong;Chen Jie;Shen Guohui;Fu Qunmei;Qian Zhenguan
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作者：
Tang Qinghong;Chen Jie;Shen Guohui;Fu Qunmei;Qian Zhenguan
采用常规室外和温室盆栽试验方法，对新型除草剂ZJ0273的防效谱、适宜使用时间和药效速度进行了研究。田间试验测定了除草剂对油菜的安全性和防除效果。结果表明，当施药量为60g ai/hm2时，对ZJ0273敏感的杂草主要是禾本科杂草，如麦冬、水草、水草、藜菜、早熟禾、黑麦草、小叶小菜、水龙骨草、水龙骨草等，防效均在80%以上。该除草剂是一种缓效型除草剂，适宜的使用时期为杂草出苗后1~3叶早期。对甘蓝型油菜新品种沪油15号的安全剂量是推荐最大剂量的两倍。推荐在杂草出苗后1~3叶初期施药剂量为45~60g ZJ0273ai/hm2，总防效为72.3%~97.6%。
The control spectrum, suitable application time and action speed of the novel herbicide ZJ0273 were studied with conventional outdoor and greenhouse pot-test methods. The security of herbicide to oilseed rape and controlling effect in field trial were tested. The results showed that the sensitive weeds to ZJ0273 at the application rate of 60g ai/hm~2 were mainly gramineous weeds, such as Alopecurus aequalis, A. japonicus, Malachium aquaticum, Chenopodium serotinum, Poa annua, Sclerochloa kengiana, Beckmannia syzigachne, Polypogon fugax, Ranunculus japonicus and Capsella buras-pastoris with the efficacy over 80%. The herbicide was a slow-acting herbicide, and the suitable application time was in early 1-3 leaf postemergence stage of the weeds. The safe dosage to Huyou No.15 (Brassica napus L.), a new rapeseed variety, doubled the recommended maximum dosage. An application dosage of 45-60 g ZJ0273ai/hm~2 in early 1-3 leaf postemergence stage of the weeds was recommended, and the total weed-control effect was among 72.3%-97.6%.