[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

苏云金杆菌等活菌制剂需在幼虫低龄期(1-2龄)使用,虫龄越大效果越差;且见效慢(2-3天),需比化学农药提前3-5天预防性施药

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