grazing rate 中文意思是什麼
grazing rate
解釋
攝食率-
As one of the contracted agricultural technology extension project in shanxi province, the jinnan cattle feeding and management technical package exte nsion project, assigned by science and technology committee of shanxi province i n 1999, directed on the problems, such as extensive cattle feeding and managemen t, low sale percentage of commercial beef cattle, low meat production, low repro ductive survive rate of cows and poor economic returns, to increase the scientif ic contents and economic returns of cattle industry by adopting technical packag e including beef cattle crossbreeding, beef cattle feeding and management, cow ' s feeding and nutrition, calf raising, stover processing, and supplementation for grazing cattle in winter and spring etc
「晉南牛飼養管理配套技術推廣」是山西省科委1999年度下達「山西省農村技術承包」項目，其目的是針對我區廣大農戶養牛飼養管理粗放、商品牛出欄率低、產肉率低、母牛繁殖成活率低、經濟效益差等缺點，通過採用肉牛雜交改良、改良肉牛飼養管理、加強母牛飼料營養、犢牛培育、秸稈氨化、放牧牛冬春補飼等配套技術，達到提高養牛業科技含量，增加養牛業經濟效益的目的。 -
But the gut evacuation rates did not vary with the experimental temperature and body size. copepods usually performed feeding rhythms with maximum level at midnight and their feeding activities changed with the tide rhythms at the estuary area. in the laizhou bay, the daily grazing rate of the copepod population on phytoplankton was 20. 81 ? 98. 35 % of the primary production and 2. 53 ? 6. 36 % of the phytoplankton standing stock in summer
現場測得的橈足類攝食率結果表明，在萊州灣，夏季橈足類群體的日攝食量占初級生產力的20 . 81 ? 98 . 35 % ，占浮游植物現存量的2 . 53 ? 6 . 36 % ，濰河口，河口外浮遊動物優勢種群體的日攝食量占初級生產力的32 . 28 % ，占浮游植物現存量的14 . 12 % ，河口內對初級生產力的攝食壓力< 3 % ，日攝食量小於浮游植物現存量的1 % 。 -
Ln naturai waters ( xiamen west harbor ), phy ' toplankton apparent growth rate was 2. 447 d - 1 and microzooplankton grazing rate was 0. 2542 d - 1 in spring
春季自然海區（廈門西港）浮游植物的生長率k為2 447d 」 『 ，微型浮遊動物的攝食率g為0 -
The effects of food concentration and diurnal photo period on the filtering and grazing rates a. pacific were discussed. the main results are showed as follows : 1. in the prawn cultivated pond, the year - round phytoplankton apparent growth rate ranged between 0. 181 ~ 1. 2888 d - 1
主要分析了微型浮遊動物對浮游植物現存量和初級生產力的攝食壓力，微型浮遊動物的氨氮排泄率及其對初級生產力的貢獻，探討了實驗室條件下食物濃度和光周期對太平洋紡錘水蚤（ acartiapacifica ）濾食率和清濾率的影響。 -
Meanwhile, grazing land is studied. the proper utilization of grazing land should be focused on grazing time, grazing regime and stocking rate
同時，對放牧場也進行了研究，放牧場的合理利用管理是關鍵，管理重點應放在放牧時間、放牧制度、適宜載畜量的確定上。 -
Microzooplankton grazing rate was 0. 578 ~ 1. 3241 d - 1 in summer and the average of three sampling positions is 0. 9762 d - 1, the highest among four seasons. winter had the lowest grazing rate, varying between 0. 2037 ~ 0. 255d - 1, and the average was 0. 2379d - 1
可見在半人工控制的蝦池生態系統中，微型浮遊動物對浮游植物潛在的攝食壓力十分巨大，它們對浮游植物的生產和歸宿起著十分重要的調控作用。 -
The most fundamental reason for population differentiation is that, different environmental conditions and grazing stress exert influences upon gene pool and gene rate, which can decide distribution of molecular variation in space and time
不同的地理條件和放牧利用壓力對基因流和基因頻率發生影響，決定了分子變異在時空上的分佈，是克氏針茅種群發生分化的最根本原因。 -
To a certain extent, alpine grassland habitat of eastern qilian mountains was fragmented by frequent disturbance ( including grazing, reclamation, etc ), which resulted in an increase of the diversity and species replacement rate was rapid in the condition of moderate soil moist and sunlight time
放牧干擾（放牧、人為不合理開發）引起生境的逐漸破碎化，使樣方內微生境或資源異質性減小，樣方間異質性增大，土壤濕度和日照時間適中時物種替代速率較快，從而導致多樣性增加。
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