The main water factors of fishpond water in lakeshore and the impact of fish yield were analyzed.
分析了三角帆蚌对水体的主要水质因子变化及鱼产量的影响。
These symbols would be displayed on occasions when the spirits are being called upon to increase the yield of corn, or fish, or to heal someone.
这些象征会在重大活动中表演，借由精神力量来增加谷物或鱼的产量，或是治疗某人。
Any of various usually woody vines of the genus derris of tropical Asia whose roots yield the insecticide rotenone; several are sources of native fish and arrow poisons.
热带亚洲鱼藤属的任何一种木质藤本植物，其根产出一种属于杀虫物质的鱼藤酮；该属有几种植物当地用作鱼毒和箭毒的原料。
The pond condition, fish seed placing, culture management as well as yield and benefit are discussed.
讨论了池塘条件、鱼种放养、饲养管理及产量和效益等。
Stock assessment is not only to forecast the static optimum fishing effort and sustainable yield, but also to assess the reactions of fish and fishermen to management choices and other changes.
资源评估不仅仅是预测静止的最佳捕捞努力量和持续产量，而是评估鱼类和渔民对管理决策和其它变化的动态反应。
By 2020 the world will be eating more farmed than wild fish, Marine bacteria may yield the cure for cancer and deep-sea bacteria may be exploited to gobble up oil spills.
与更耕种的野生的鱼相比较，到2020年世界将吃，海上细菌可以产生治疗癌症的药，深海细菌可能被利用贪婪地吃漏油。
The buckling and "fish tail" are often occurred in sizing press, which can reduce the metal yield.
前言：板坯调宽侧压过程中常出现失稳弯曲及头尾部鱼尾过长现象，降低了产品的成材率。
By using single rice cultivation as a control, the effect of rice-fish culture on growth dynamic, plant type and yield formation of rice was studied.
以同期播种的常规栽培水稻为对照，研究稻渔共作对水稻生长发育动态、株型特征及产量形成的影响。
Different cultural approaches affected the yield and quality of rice in rice-fish system significantly. Some improved techniques could be applied to the rice production in rice-fish culture.
试验表明，不同的栽培措施对稻渔共作水稻生长及产量品质形成影响明显，同时从中可看到若干技术措施可作适当的改进。
Stock assessment is not only to forecast the static optimum fishing effort and sustainable yield, but also to assess the reactions of fish and fishermen to management choices and other changes.
资源评估是应用各种统计和数学方法量化地研究鱼类种群形态对渔业管理选择的反应。
Stock assessment is not only to forecast the static optimum fishing effort and sustainable yield, but also to assess the reactions of fish and fishermen to management choices and other changes.
资源评估是应用各种统计和数学方法量化地研究鱼类种群形态对渔业管理选择的反应。
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