種群調節 的英文怎麼說
中文拼音 [zhǒngqúndiàojié]
種群調節
英文
population regulation-
The probing of biotic population regulation mode
生物種群調節方式探討Now the possibility must be investigated that endogenous population processes are important in population regulation.
現在必須研究在種群調節中內生性種群過程起重要作用的可能性。These bacteria are transmitted through the cytoplasm of eggs and have evolved various mechanisms for manipulating reproduction of their hosts, including cytoplasimic incompatibility ( ci ), parthenogenesis, feminization, male killing, fecundity or fertility modifying etc. wolbachia are common and widespread bacteria infecting 17 % insect population, 17 crustacean species, mites and many nematodes
這些共生菌通過母系遺傳參與調控寄主的多種生殖活動，包括細胞質不親和現象、誘導孤雌生殖現象、雌性化、雄性致死以及調節寄主生殖力等。 wolbachia的分佈十分廣泛，目前已經發現在超過17的昆蟲種群以及17種甲殼綱動物、蟎蟲、線蟲體內發現了它的存在。From the aspects of agricultural economic and environmental ecological effects, were the effects and mechanism of rare - earth micro - fertilizer to improve the growth, development, quality and yield of the crops ; the adjustment of crops growth by influencing the number of microbial population in soil district and the function of the soil dehydrase, alkaline phosphatase, urease and sucrase ; the ecophysiological effects of alleviating the injure of acid rain, ultraviolet radiation, heavy metal on crops were illustrated ; the sureness of bee ' s use in agricultural was provided, according to the rule of the distribution and enrichment of be in crops
摘要從農業經濟效應和環境生態效應二方面，論述了稀土肥料促進作物生長、發育，提高作物產量，改善作物品質的效應與機理；影響土壤區系中微生物種群數量和土壤脫氫酶、堿性磷酸酶、脲酶及蔗糖酶的功能，繼而反饋調節作物生長；緩解酸雨、紫外輻射和重金屬傷害作物的生態生理學效應；並以稀土在作物體內分佈與富集規律為參考，探討了稀土農用的安全性。The regulation effect of cannibalism in the dynamics of the population model
自相食對種群的調節效應Abstract : based on the investigation of educational quality and levels, labor technique, living standard, and economic structure on the cropping system and animal husbandry as well as local industry, and by the comprehensive analyzing, it was suggested that it is possible to establish comprehensive agriculture experiment and extension station centralizing water saving in this village. because of its better social and economic levels and fundamental conditions
文摘:通過對東新村村民文化素質、勞動力狀況、群眾生活水平以及農村經濟結構、種植業、養殖業和鄉村企業的調查，綜合分析認為，該村的社經狀況屬中等偏上水平，已具備了建立以節水為中心的農業綜合發展試驗示範基點的基本條件。There are several insect pests and diseases breaking out simultaneously in xiangshui county in 1998 while rice is in the ear. for integrated controlling these pests effectively as well as using less manpower and cost. we took such measures as taking account of all the major heading pests, selecting the appropriate insecticides and fungicides at the same time only once, which reaches the goal of overall - control pests. all of these measures are well received by local peasants
響水縣98年水稻穗期多種蟲害，病害並發、重發應採取的綜合控制對策是在病蟲害集中發生和防治適期內採取適當調佳用藥時間，瞻前顧后，一藥多用，多藥合用，病蟲兼治，主次突出，達到全面控制病蟲害的目標，省工節本，深受群眾的歡迎。Sweetpotato pollens killed by u. v. didn ' t sprout ; 2. normal pollens sprouted ; 3. pollens of 5x mixed with recognition pollens attached and sprouted much ; 4. in the negative - cross, sweetpotato pollens attached and sprouted much on the stigma of 5x ; 5. in the possitive - cross without recognition pollen, 5x pollens few attached and sprouted ; 6. in the treatment of pgr ( twice ), globular - embryo observed on 15 days after pollination ; 7. ovule obtained by intercross germinated on the medium ; 8. plantlet from intercross ovule grew on the medium ; 9. seeds obtained by opening pollination ; 10. tubers of hybrids from 5x crossed by sweetpotatos for two generations
紫外線殺死的甘薯花粉在親和柱頭上不萌發； 2 .未經紫外線處理的甘薯花粉在柱頭上正常萌發； 3 .在蒙導花粉作用下，五倍體的花粉在甘薯柱頭上大量附著和萌發； 4 .反交組合甘薯花粉在五倍體柱頭上大量附著和萌發； 5 .正交組合無蒙導花粉時五倍體花粉少量附著和萌發； 6 .生長調節劑二次處理后，授粉后15天所見的球形胚； 7 .雜交胚珠在培養基上萌發； 8 .雜交胚珠培養成苗； 9 .放任授粉收獲的大量種子； 10 .五倍體與甘薯雜交兩代產生的後代群體的結薯性。By building up tumor growth aerodynamic model, when tumor growth aerodynamic laws is research to find : the process of tunor increasing squares with economic growth of gompertz growth parabola description ; we further study that gompertz growth parabola squares with population growth and regulation of logistic growth parabola description
摘要通過建立腫瘤增長動力學模型，研究腫瘤增長動態規律時發現：腫瘤增長的全過程與龔珀茲增長曲線描述的經濟增長過程完全相符；進一步給出了龔珀茲增長曲線與描述種群的增長與調節的邏輯斯蒂增長曲線完全相似。This thesis suggests a process considered minimizes the population size as similar individuals occur in the fitter members of the population, which helps reduce the execution times for ga by removing the redundancy associated with the saturation effect found in the later generation. this thesis uses a method that adds dynamic penalty terms to the fitness function according to the optimal degree of solutions, so as to create a gradient toward a feasible suboptimal or even optimal solutions. on the basis of the difference of the biggest and the smallest of fitness of individual, modifying the fitness function in order to convergence is a satisfaction
動態調節種群大小，去掉遺傳演算法在迭代後期搜索產生的過多相似個體，達到減少計算時間的目的；按照解的優劣程度給適應度函數增加一個在ga搜索過程中動態改變的可變罰函數，給搜索最優解創造一個梯度，使遺傳演算法收斂到可行的較優解或最優解；根據適應度值最大和最小個體的差修正適應度函數，使適應度函數值適中不容易造成收斂太快、局部收斂或根本不收斂而變成隨機搜索；為了避免「近親繁殖」採用競爭擇優的交叉操作；利用并行遺傳演算法的思想，提出一種自適應多子種群進化策略；提出人口汰新政策來解決類似甚至相同的個體的情況發生。Green spaces moderate water cycles, absorb pollutants, regulate atmospheric gasses, buffer the spread of crop and livestock diseases, capture energy, stabilize populations, act as gene pools, and provide habitat for wildlife
這綠地是用於調緩水資源，吸收污染物，調節大氣，緩沖作物和牲畜病害，獲取能源，穩定種群人口的。The relation of ( he diversity to clonality was determined by conal architecture, control mechanism among ramets and habitat conditions. in general, the relation between shannon - wiener index and importance of clonal plants was positive in plant - spare habitats, but negative in plant - dense habitats
群落中克隆性與多樣性的關系同植物的克隆生長構型和克隆植物種群內部的調節機制，以及植物的生境狀況有關系。In the fifth chapter, a new fully differential operational amplifier with voltage and current - mode negative feedback has been proposed, which can stabilize its quiescent operation point, using the characteristic of mos transistors which operate in the triode region acting as active variable resistor, a fully differential fourth - order chebyshev low - pass filter with tunable frequency and bessel low - pass filter with accurate group delay based on r - mosfet - c and operational amplifier has been designed
第五章：提出了一種新的既具有電壓共模負反饋又同時具有電流共模負反饋的全差分運算放大器電路，能較好地穩定電路的靜態工作點，並應用mos管工作在線性區可作有源可變電阻用的特性設計得到了截止頻率可連續調節的高性能r - mosfet - c 、運放結構切比雪夫（ chebyshev ）和精確群時延值貝塞爾（ bessel ）低通濾波器。The investigation on season change circumstances of mosquito stock at ji nan internaticnal airportp
濟南國際機場蚊蟲種群季節變化情況的調查From march to december, 2001, as a part of new multifactorial hypothesis ( nmfh ) research of population system regulation in small mammals, our studies were completed at qingliangfeng national natural conserve, zhejiang province, china
本研究系小型哺乳動物種群系統動態調節新復合因子研究的一部分，於2001年3月? 12月，在浙江省清涼峰國家自然保護區進行。Bacteria, viruses and parasites are abundant in marine ecosystems and their abilities for rapid replication and host - specificity make them attractive hab controlling agents ; however, potential ecological impacts need to be taken into account
細菌、寄生蟲和病毒等微型生物是天然水體中具有調節藻類種群動態平衡的重要潛在因子，它們的繁殖速度非常快，並具有宿主的專一性，是一種非常有潛質的赤潮調控因子。Clonal growth regulation and population stability maintenance of clonal plant hippophae rhamnpides l. ssp. sinensis
中國沙棘克隆生長調節與種群穩定性維持In the study of species dynamics, the permanence of the species is one of the most interesting problems. in recent years, people have destroyed the enviorment, which leads to some biologies distinction. in some documents on the permanence of the species, there are two ways which can be used to save the distincting species. one is human ' s interference, the other is species " adjust ion
在許多研究種群持續生存的文獻中，關于如何挽救面臨滅絕的種群，有兩種途徑得以實現：一是通過人為干預，放養或捕獲，使其持續生存；一是通過種群間的自然調節，遷移它的生存環境，使其持續生存。分享友人