| 武育芳1, 彭文栋1*, 张灵瑜1, 刘定鑫1, 李风阳1, 赵向峰1, 郭 瑾1, 伏兵哲2.牛枝子繁种田田间杂草防除技术研究[J].植物保护,2026,(1):336-340. |
| 牛枝子繁种田田间杂草防除技术研究 |
| Weed control technology in Lespedeza potaninii seed production field |
| 投稿时间：2024-12-20 修订日期：2025-02-06 |
| DOI：10.16688/j.zwbh.2024670 |
| 中文关键词: 牛枝子 除草剂 安全性 杂草防效 |
| 英文关键词:Lespedeza potaninii herbicide security control efficacy |
| 基金项目:宁夏盐池县草原畜牧业转型升级项目(MB1511742640323506); 基于生态安全的荒漠草原植被修复及生态生产功能耦合关键技术研究与示范项目(NGSB-2021-14-06) |
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| 中文摘要: |
| 为实现优质牧草牛枝子Lespedeza potaninii繁种田田间杂草的有效防控。本研究设置土壤封闭处理和茎叶喷雾处理, 通过综合评估不同处理对牛枝子的安全性和对田间杂草的防除效果，筛选最佳农药或农药组合。结果表明:土壤封闭处理在施药60 d后5%咪唑乙烟酸水剂对牛枝子的生长无影响, 不会造成牛枝子死苗, 且对田间阔叶类杂草的株防效和鲜重防效最优，分别为96.35%和88.87%, 对禾本科杂草的株防效和鲜重防效分别为98.48%和95.98%; 茎叶处理药剂158 g/L高效氟吡甲禾灵乳油+440 g/L氟醚·灭草松可溶液剂在牛枝子三叶期喷施后60 d对田间杂草的株防效和鲜重防效分别达到85.86%和88.33%, 该药剂组合对牛枝子生长无不良影响。综上, 在大面积进行牛枝子繁种田建设时采用上述配方进行土壤封闭或杂草茎叶处理可达到用药成本低和防效高的杂草防控成效。 |
| 英文摘要: |
| To effectively control weeds in Lespedeza potaninii seed production fields, this study evaluated soil sealing treatments and foliar spray treatments. The optimal pesticide or pesticide combination was selected through a comprehensive assessment of the safety to L.potaninii and its weed control efficacy in the field. The results showed that: 60 days after the application of soil sealing treatment, 5% AS imazethapyr had no adverse effects on the growth of L.potaninii and did not cause seedling mortality. Moreover, it achieved the optimal control efficacy against field weeds: the plant control efficacy and fresh weight control efficacy against broadleaf weeds reached 96.35% and 88.87%, respectively, while those against gramineous weeds reached 98.48% and 95.98%, respectively. The stem and leaf treatment agent haloxyfop-P-methyl 158 g/L EC+acifluorfen bentazone 440 g/L SL achieved a plant control efficacy of 85.86% and a fresh weight control efficacy of 88.33% on field weeds after 60 days of treatment at the three leaf stage of L.potaninii, with no adverse effects on L.potaninii growth. The results indicate that the above formula can be used for pre-emergence herbicide application or weed stem and leaf treatment to achieve low herbicide cost and effective weed control in large-scale potaninii propagation field construction in production practice. |
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