蚕种场桑螟防治策略为：主要做好越冬代桑螟防治和清理工作。
The most importance of control mulberry pyralid in silkworm egg producing farms was to control and clear the over winter generation.
本文运用NTC-TD热敏电阻法测定了桑螟越冬幼虫的过冷却点、冰点。
NTC-TD heat-sensitive resistance is used to measure the super cooling-point (SCP)and freezing point of over-wintering larvae of Diaphania pyloalis;
本文运用NTC-TD热敏电阻法测定了桑螟越冬幼虫的过冷却点、冰点。
NTC-TD heat-sensitive resistance is used to measure the super cooling-point (SCP)and freezing point of over-wintering larvae of Diaphania pyloalis;
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