[关键词]
[摘要]
为提升甘肃党参的生产水平和产业竞争力,研究形成了以土壤处理 +种苗处理 +叶面喷雾为主的 2种符合 GAP认证的党参病虫害防控技术模式,并分析了其与常规生产模式的差异。结果表明:生物综合防控技术模式(撒施 5.0亿/g枯草芽孢杆菌颗粒剂 1200.0 kg/hm2 +150亿孢子 /g球孢白僵菌可湿性粉剂 30.0 kg/hm2后旋耕土壤,用 3%春雷· 5亿多粘悬浮剂 400倍液 +氨基酸水溶肥 (GGR6)100倍液 +100亿/mL解淀粉芽孢杆菌液体肥 200倍液处理种苗,“倒春寒”前后 3d内各叶面各喷 1次杞天健防冻剂 100倍液,初花期间隔 10 d连喷 2次氨基酸水溶肥 (GGR8)100倍液 +十二元素水溶肥 200倍液)和绿色综合防控技术模式(撒施 5.0亿/g枯草芽孢杆菌颗粒剂 1 200.0 kg/hm2+3%辛硫磷颗粒剂 90.0 kg/ hm2后旋耕土壤,用 25%吡唑醚菌酯悬浮剂 1500倍液 +3%甲霜·噁霉灵水剂 1000倍液处理种苗,“倒春寒”前后 3d内各叶面各喷 1次杞天健防冻剂 100倍液,初花期间隔 10 d连喷 2次氨基酸水溶肥 (GGR8)100倍液 +十二元素水溶肥 200倍液 +25%丙环唑乳油 1 000倍液)出苗率较无防控生产模式显著提高 14.52%和 10.13%,且出苗期提早 1~2d;对党参根腐病防效较好,分别为 37.97%和 27.55%,显著高于常规生产模式(土壤撒施 3%辛硫磷颗粒剂 90.0 kg/ hm2,旋耕后移栽,“倒春寒”后喷施 2次磷酸二氢钾 500倍液,初花期连喷 2次壮根灵 100倍液);其中生物综合防控技术模式对蛴螬防效较高,为 60.78%,显著高于其他模式处理。综合评价:党参生产中生物综合防控技术模式在党参保苗促苗、防病防虫及增产增值等方面表现突出,可在生产中推广应用。
[Key word]
[Abstract]
To improve the production level and industrial competitiveness of Codonopsis pilosula in Gansu, this study devel.oped 2 GAP-compliant pest and disease management models centered on soil treatment, seedling treatment, and foliar spraying, andcompared them with the conventional production model. Results showed that the biological integrated control model, i.e., soil rotarytillage after broadcasting 1 200.0 kg/ha of Bacillus subtilis granules at 5.0 × 108 CFU/g and 30.0 kg/ha of Beauveria bassiana wettable powder at 1.5 × 1010 spores/g, seedling treatment with a 400-fold dilution of 3% kasugamycin–polymyxin suspension, a 100-fold dilu. tion of amino acid water-soluble fertilizer (GGR6), and a 200-fold dilution of Bacillus amyloliquefaciens liquid fertilizer at 1.0 × 1010 CFU/mL, 1 foliar spray of Qitianjian antifreeze agent at 100-fold dilution within 3 d before and after late spring cold events, and twoconsecutive foliar sprays at 10 d intervals during the initial flowering stage with a 100-fold dilution of amino acid water-soluble fertil.izer (GGR8) plus a 200-fold dilution of twelve-element water-soluble fertilizer, and the green integrated control model, i.e., soil rotarytillage after broadcasting 1 200.0 kg/ha of Bacillus subtilis granules at 5.0 × 108 CFU/g and 90.0 kg/ha of 3% phoxim granules, seed.ling treatment with a 1 500-fold dilution of 25% pyraclostrobin suspension and a 1 000-fold dilution of 3% metalaxyl–hymexazolaqueous solution, 1 foliar spray of Qitianjian antifreeze agent at 100-fold dilution within 3 d before and after late spring cold events,and 2 consecutive foliar sprays at 10 d intervals during the initial flowering stage with a 100-fold dilution of amino acid water-solublefertilizer (GGR8), a 200-fold dilution of twelve-element water-soluble fertilizer, and a 1 000-fold dilution of 25% propiconazole EC,significantly increased emergence rate by 14.52% and 10.13%, respectively, compared with the production model without control mea.sures, and advanced emergence by 1 to 2 d. Both models showed good efficacy against root rot of C. pilosula, with control effects of37.97% and 27.55%, respectively, significantly higher than that of the conventional production model, i.e., broadcast application of 90.0 kg/ha of 3% phoxim granules to the soil, transplanting after rotary tillage, 2 sprays of 500-fold diluted potassium dihydrogen phos.phate after late spring cold injury, and 2 consecutive sprays of 100-fold diluted Zhuanggenling at the initial flowering stage. Amongthem, the biological integrated control model showed the highest efficacy against white grubs, reaching 60.78%, significantly outper.forming the other treatments. Comprehensive evaluation indicated that the biological integrated control model performed particularlywell in seedling protection and promotion, disease and insect control, yield improvement, and value enhancement in C. pilosula produc. tion, and therefore has strong potential for wide application in agricultural practice.
[中图分类号]
S567.5
[基金项目]
甘肃省农业农村厅科技支撑项目( KJZC-2026-21) ;甘肃省现代农业科技支撑体系区域创新中心重点科技项目( 2023GAAS02);定西市揭榜挂帅项目( DX2024AZ23);国家药品监督管理局中药材及饮片质量控制重点实验室。