繁殖態節 的英文怎麼說
中文拼音 [fánzhítàijié]
繁殖態節
英文
breeding season-
During 2001 to 2002, observation and statistics were made on the dynamic status of migration, habitat form, habit of activity and population density of aves in the wetland of hengshui lake. the management and protection of bird resources are also discussed in the paper
本文對衡水湖自然保護區鳥類的物種多樣性和季節動態、以及重要水鳥的繁殖和水鳥生境的重要性進行了研究，分析了衡水湖自然保護區水鳥面臨的威脅，並提出了保護對策。2 comparative study on morphology in the light of the form of the materials, hup shows more approximate relationship with gri : they are 50 ~ 70cm high at the period of fructescence ; both are perennials and reproduce themselves by root stock, and especially, hup can also reproduce itself by branch roots and buds growing from stipes when the stems fall againt the ground, and then those buds develop into new bodies ; while gri can reproduce itself not only by vegetative propagation but by seeds. both of hup and gri characterize with bigger leaf blade and with the approximate form of simple leaf, with root stock, and with two - line seeds in one fruit
2形態學比較從形態上來看，新種hup與分佈海拔高度相近的gri比較接近:植株體高大，果期株高50一7ocm ;都為多年生，能以其根狀莖繁殖，但前者還以較為特殊的營養體繁殖後代，即倒伏后每個莖節上長出新的根和芽，發育成獨立的新植株，後者既能以營養體繁殖，又可通過種子繁殖;具有較大的葉片且單葉形態相近，果實內有二行種子（其它種為一行） . 。Development of water - saving agriculture, dry fanning and ecological agriculture, construction of fine quality product centers of gain, cotton, oil and tobacco, well - bred breeding, reform of middle and low yield fields, small watershed control, processing and storage of agricultural and sideline products, production of high - efficiency low toxicity and safe biological pesticide, construction of livestock breeding centers
節水農業、旱作農業、生態農業開發，糧、棉、油、煙優質產品基地建設，良種繁育，中低產田改造，小流域治理，農副產品加工貯藏，高效、低毒、安全生物農藥及高效有機肥生產、養殖業基地建設等。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。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。分享友人