• 延迟投饵2以上使云斑尖塘鳢仔鱼的存活率显著下降

    The larvae livability obviously decreased due to delayed feeding for more than 2 days.

    youdao

  • 结论 双氯敌鼠对褐家鼠适口性特殊环境中一次投饵药效较为理想。

    Conclusion The dichlorophacinon ammonium had the high toxicity and good palatability to R. norvegicus, which had good control efficacy in the special environment.

    youdao

  • 保持八分平时仔细观察情况及时采取应对措施注意不要让饲养变质

    Feeding only to keep eight full, carefully observing the fish situation, and taking response measures at time. Be careful not to keep the water deterioration.

    youdao

  • 海水养殖应当科学确定养殖密度,并应当合理施肥正确使用药物防止造成海洋环境污染

    In Marine culture, breeding density shall be scientifically determined, bait and manure be rationally spread, medicines be accurately applied, and pollution to the Marine environment be prevented.

    youdao

  • 同时不同盐度条件下对初孵奥尼罗非鱼仔鱼进行耐饥饿试验,测定其不投饵存活系数SAI)。

    The effects of seawater salinity on hatching rate and survival activity index (SAI) of Epinephelus akaara were studied in the laboratory.

    youdao

  • 方法室内采用调查密度室外采用夹夜法调查鼠密度;方式为一次性饱和放溴敌隆毒

    Methods indoor and outdoor rodent density was investigated both indoor using powder tracking and night-trap Methods after saturated deployment of bromadiolone baits.

    youdao

  • 当日投饵大于组的80%隔天喂足量料,则可基本满足的摄食需求对其群体的成活率没有明显的影响;

    The nutrient requirements by the crabs might be provided basically and the survival rate did not decrease obviously when they were fed every other day or more than 80% satiation.

    youdao

  • 实验比较了5盐度梯度(28、22、16104)下菖鲉仔鱼饥饿条件下存活状况并测定其不投饵存活系数SAI

    The effects of salinity on survival activity index(SAI) of the larvae of Sebastiscus marmoratus were studied in the laboratory. 5 different levels of salinity were set as follows:28,22,16,10,4.

    youdao

  • 实验比较了5盐度梯度(28、22、16104)下菖鲉仔鱼饥饿条件下存活状况并测定其不投饵存活系数SAI

    The effects of salinity on survival activity index(SAI) of the larvae of Sebastiscus marmoratus were studied in the laboratory. 5 different levels of salinity were set as follows:28,22,16,10,4.

    youdao

$firstVoiceSent
- 来自原声例句
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定