搜索結果

... fu l M ar in e M ic ro al ga e in H on g Ko ng 海洋裏有數以千種的微藻生長，它們都是構成食物網基層的初級生產者。大部份微藻均不會對人類、 海洋生物或自然環境造成不良影響，只有少數微藻品種，即使在低細胞密度環境下，仍會造成危害， 例如導致魚類死亡及海產污染等。這些現象稱為有害藻華。 在香港的浮游植物中，硅藻和甲藻是兩個最常見的組別，而許多引發紅潮的品種都屬於這兩個組別。 硅藻 ( 硅藻綱 ) 是單細胞生物，長有黃褐色葉綠體及硅質細胞壁。細胞壁由兩片殼組成，兩者由側帶 連合。硅藻分為兩類：(1) 圓心硅藻—殼面呈圓形，紋理為輻射形對稱，例如圓篩藻屬；(2...

... fu l M ar in e M ic ro al ga e in H on g Ko ng 海洋裏有數以千種的微藻生長，它們都是構成食物網基層的初級生產者。大部份微藻均不會對人類、 海洋生物或自然環境造成不良影響，只有少數微藻品種，即使在低細胞密度環境下，仍會造成危害， 例如導致魚類死亡及海產污染等。這些現象稱為有害藻華。 在香港的浮游植物中，硅藻和甲藻是兩個最常見的組別，而許多引發紅潮的品種都屬於這兩個組別。 硅藻 ( 硅藻綱 ) 是單細胞生物，長有黃褐色葉綠體及硅質細胞壁。細胞壁由兩片殼組成，兩者由側帶 連合。硅藻分為兩類：(1) 圓心硅藻—殼面呈圓形，紋理為輻射形對稱，例如圓篩藻屬；(2...

...; 堆 肥 1,000 公 斤 、 麩 粉 及 骨 粉 各 90 公 斤 。    ...

...; 採 收 ： 當 果 實 成 熟 飽 滿 ，果 皮 暗 啞 黄 褐 時 才 採 收 （播 種 後 約 90 ~ 100 天）。...

..." completed in 1998, catches in most areas had fallen by more than 50% since the late 1980s, and fish fry production by 90%. Individual surveys among local fishermen in recent years also pointed to the degradation of local fisheries production. "Fish species of bigger size and higher...

... built heritage. "This 90-year-old historical building has been revitalised after restoration. Woodside is an example of a happy marriage between nature conservation and heritage conservation with the concerted efforts of the local community and government departments," he said. Though widely known as a...

... pigs, as well as one water and 20 feed samples. Given that two of the urine samples tested positive for chloramphenicol, the AFCD took, in four batches, a total of 90 additional urine samples from pigs reared at the farm. All of them, and the water and feed samples collected, tested negative for...

... the dogs to stay within the territory of Macao for not less than 90 days after the blood test. Applicants must also obtain export health certificates issued by the Macao Authority. Applicants shall submit the report on the rabies antibody level and the vaccination record of each dog to the...

... Common Name: Little EgretSpecies Name: Egretta garzettaLength: 61 cm (24 inches)Status: Resident Common Name: Great EgretSpecies Name: Egretta albaLength: 90 cm (36...

...; 行 距 約 4 呎 。 施 肥 及 管 理 ： 每 斗 地 約 施 堆 肥 1,000 公 斤 、 麩 粉 及 骨 粉 各 90 公 斤 為 基 肥 。...