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161.
Lyu Yucai Yang Tao Liu Herong Qi Zheng Li Ping Shi Ziyao Xiang Zhen Gong Dachun Li Ning Zhang Yaoping 《Environmental science and pollution research international》2021,28(16):19866-19877
Environmental Science and Pollution Research - Chromium (Cr) is one of the most widely used heavy metals in industrial processes, resulting in water and soil pollution that seriously threaten... 相似文献
162.
随着社会经济的发展,长江三角洲的生产力布局也发生相应的变化,针对其现状特征和发展动向,论述了生产力布局的基本框架以及相关的基础设施、城市发展等问题。 相似文献
163.
164.
气相色谱——火焰光度法测定废水中黄磷的方法研究 总被引:7,自引:0,他引:7
研究了以苯为萃取剂,用气相色谱--火焰光度法测定废水中的微量黄磷。结果色谱分离良好,萃取率大于94%,水样易于保存,溶剂和杂质不干扰测定,水样加标回收率大于88.48%,精密度重复测定的变异系数不大于3.2%,定性检出限为2μg/L,定性检出限为6μg/L。 相似文献
165.
166.
Li Xiuzhen Wu Kunjun Gong Peiyu Institute of Zoology Academia Sinica Beijing China 《环境科学学报(英文版)》1990,(4)
Population life tables of the army worm, Mythimna separata, were constructed and nutritional parameters of food for the larvae were examined at 5 temperatures from 16℃ to 32℃. The temperature suitable for growth and reproduction of the insect ranged from 20℃ to 28℃ with the optimum of 24℃. Their survivalship and fecundity were much poorer at 32℃ than at 16℃. Indices of population trend of the insect at these temperatures could well fitted with the parabolic curve which theoretically indicated that the population density would multiply by some 660 after one generation circle at the optimal temperature, 22.6℃, and it would decline at temperatures higher than 32.9℃ or lower than 12.3℃. Larval food intake and their AD tended to go up while their ECI and ECD to go down with a rise in temperature. These alterations in population size and feeding behavior caused by temperature would exert an important effect on their damage to crops. 相似文献
167.
本文依据生态学理论对海岛土地及土地系统生态功能进行了重新的认识,并探讨了海岛土地系统生态设计的依据、原则和模式.设计中强调以土地系统生态保护性功能为主体,以海岛土地系统高层次调合发展作为海岛建设的最终目标. 相似文献
168.
EffectofSO_2-pollutedrapeplantongrowthandreproductionoftheturnipaphid,Lipaphiserysimi(Kaltenbach)¥WuKunjun;GongPeiyu;LiXiuzhe?.. 相似文献
169.
Population life tables of the army worm, Mythimna separata, were constructed and nutritional parameters of food for the larvae were examined at 5 temperatures from 16℃ to 32℃. The temperature suitable for growth and reproduction of the insect ranged from 20℃ to 28℃ with the optimum of 24℃. Their survivalship and fecundity were much poorer at 32℃ than at 16℃. Indices of population trend of the insect at these temperatures could well fitted with the parabolic curve which theoretically indicated that the population density would multiply by some 660 after one generation circle at the optimal temperature, 22.6℃, and it would decline at temperatures higher than 32.9℃ or lower than 12.3℃. Larval food intake and their AD tended to go up while their ECI and ECD to go down with a rise in temperature. These alterations in population size and feeding behavior caused by temperature would exert an important effect on their damage to crops. 相似文献
170.