防治

Now people in common use 瓢 insect to prevent and cure aphid of doing ill the farm crop.

现在人们常用瓢虫来防治为害农作物的蚜虫。

The results showed that lambda-cyhalothrin 2.5% WP had a preferably good quick and persistent efficacy, its recommended usage 300-450 g/hm2 could kill more than 80% of the aphides and this efficacy could last for 10 days without safety problems to cruciferae vegetables.

试验结果表明：2.5%高效氯氟氰菊酯WP对防治十字花科蔬菜蚜虫有较好的速效性和持效性；推荐制剂用量为300~450 g/hm2，防效可在80%以上，持效期达10 d，且对作物安全。

According to the change of the enemy\'s quantity and the qualitative theory of the differential equation, we research the spruce aphides and its predator system. At the same time, we discussion the spruce aphid multiplication model when the natural enemy quantity is a certain value and the periodic oscillating model whose the quantity of the natural enemy changes along with the time. Obtains the stability condition of the balance point and the limit-cycle existing condition, the system presents the dissipative structure\'s character. Finally it explains that this theoretical analysis has certain practical significance regarding the preventing and controlling harmful insect.

第五章，松毛虫与其天敌的关系是食饵和捕食者的关系，根据天敌数量的变化，利用微分方程定性理论，研究松毛虫与天敌系统，讨论天敌数量为一定时的松毛虫增殖模型和天敌数量随时间变化的周期振荡模型，得到正平衡点全局稳定性和极限环的存在条件，通过计算机模拟，说明周期振荡的捕食模型能够呈现典型的时间耗散结构特征，对于防治害虫有一定的实际意义。

The study was to provide the theoretical guidance for control of Aphis sp.

［目的］为枸杞蚜虫的防治提供理论指导。

Objective To evaluate the features and preventive strategies of nosocomial infection in patients with acute cerebral apoplexy.

目的 探讨急性脑卒中患者医院感染的特点及防治措施。

The clinical therapy of 45 cases of patients with cerebral apoplexy disease.

目的：探讨及总结丘脑卒中合并多脏器功能衰竭的临床防治方法。

Apple scab, caused by Venturia inaequalis Wint, is regarded as one of the most serious apple diseases in the world.

苹果黑星病是世界各苹果产区的重要病害之一，具有流行速度快、危害性大、难于防治等特点。

Grisea, especially appressorium differentiation and formation, have been well studied, while the post-penetration processes which is essential for infection cycle of M.

稻瘟病菌引起水稻的重要病害——稻瘟病，了解其致病分子机制对稻瘟病菌的防治意义重大。

ABSTRACT］Objective: To explore the clinical manifestation, prevention and treatment of large vestbular aqueduct syndrome.

目的：探讨大前庭导水管综合征的发病、临床表现及防治措施。

Moreover,continuous renal replacement therapyplays an important role in prevention and treatment of ARF and CRF.

开展连续性肾脏替代治疗对小儿急、慢性肾衰竭的防治具有重要意义。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。