查询词典 arid

Dissipative Hydrological model for the arid area was used for the Hotan oasis, developed combinedly by the three universities based on the characteristics, water balance theory and water cycle of the watershed in the arid area.

根据干旱区流域特点，在水量平衡原理和水循环基础上，将西安理工大学博士学位论文三所高校联合开发研制的干旱区平原绿洲散耗型水文模型用于和田绿洲。

According to the statistics of the percentages of thermophilic and hygrophilous plants in various members, the warm humid climate alternated with the arid (or semi-arid) climate throughout the deposition stage of the Xujiahe Formation.

川北晚三叠世须家河组植物化石含量丰富，根据喜湿植物，喜热植物在各段的厚分含量统计，须家河组整个沉积阶段气候温暖，潮湿与干旱气候交替出现。

Some stress resistant physiological indexes of the leaves of three Ligustrum species were compared to provide theoretical basis for cultivation management in arid and semi-arid area in north China.

为给女贞、金叶女贞和金边女贞在北方干旱、半干旱地区的栽培与管理提供理论依据，对这三种女贞的部分抗性生理指标进行了比较试验。

In arid and semi-arid zones, appearance of microbiotic crusts will change the surface condition of sand dunes greatly.

在干旱、半干旱地区，微生物结皮的出现完全改变了沙丘表面状况。

Microbiotic crust is one of the important components in arid and semi-arid area, which attracts more and more attentions for its hydrological process recently.

：微生物结皮是干旱半干旱地区生态系统的重要组成部分，其生态水文过程受到了广泛关注，但对微生物结皮在地表蒸发过程中的作用存在较大的争议。

Diversity and phylogeny of rhizobia isolated from root nodules of Sesbania cannabina in Jinshajiang arid river valley;2. To study the diversity and phylogeny of rhizobia from Sesbania cannabina in JinShaJiang arid river vally in Sichuan,48 rhizobia was isolated,nodulated,and studied by numerical taxonomy,BOXAIR-PCR,16S rDNA PCR-RFLP,sequences analysis of 16S rDNA and GSⅡ.

从金沙江干热河谷区田菁根瘤中分离得到48株根瘤菌，在对其进行回接实验后，采用数值分类、BOXAIR-PCR、16S rDNAPCR-RFLP、16S rDNA和GSⅡ序列分析方法对这些菌株进行研究，以揭示在金沙江干热河谷区这一特殊地理环境下田菁根瘤菌的多样性和系统发育地位。

The precipitation fluctuation influenced the changes of phenological events as well, especially in the arid and semi-arid region. There was a time lag for the response of vegetation activity to climate change, and the duration varied with scale, space and time.

无论是活跃生长开始日期的变化趋势，还是活跃生长结束日期的变化趋势，随着海拔的变化都具有明显的变化规律。

Based on the situation in Shanghai. this paper applys the theories of in tegration of city and countryside. agriculture in city countryside. agricultur- al modernization arid sustainable agricultural development to deal with the achiveruen t of national industrialization and modernization lie in agrieultura~ modernization ?-? integration of city and countryside -~-? urbanization of rural areas-?-? agriculture in city countryside this is the main clue of the paper. In the view cf history and reality with overall and system. this paper appl~is analysis method of combination of normative and positive. quantattve and qualitive. long-term and short-term and, internal, external arid Shang- hai to discuss relationship among agriculture in city countryside. agricultural modernization and sustainable developrncnt, the history. present and re- straint factors of sustainable development of modern agriculture in city coun- tryside in Shanghai is further analysed. So concepts. goals. index system. selective patterns, developmental strategys and measures of sustainable de- velopment of modern agriculture in city countryside are raisen.

本文立足于上海，依据城乡一体化、都市农业、农业现代化和农业可持续发展理论，围绕着实现国家工业化与现代化的出路在于把农村、农业剩余劳动力转移出来，实现农业现代化——农业剩余劳动力转移必须打破城乡分割，实现城乡一体化——打破城乡分割又必须实现农村城镇化——农村城镇化前提下的农业一定是都市农业的中心线索，全面系统地从历史与现实的角度，运用理论与实践、规范与实证、定性与定量、国内外与上海以及点面相结合的分析方法，探讨了都市农业、农业现代化与可持续发展的关系，分析了上海现代都市农业可持续发展的历史、现状和制约因素，提出了现代都市农业可持续发展的概念和目标、指标体系、选择模式以及发展战略和对策。

Drought has seriously influenced agricultural development because there are 20310 million square miters area under cultivation in the west half arid and arid ecology area which is 51.5% of total cultivation area in JiLin province.

吉林省西部干旱、半干旱生态区现有耕地面积203.1万hm2，占全省耕地面和的51.5％，干旱严重地影响了农业的发展。

Propylaea japonica is one of important predatory natural enemies in arid and semi-arid area China, especially those preying on younger larvae and eggs of insect pest in orchards and cotton fields.

龟纹瓢虫Propylaeajaponica是我国干旱、半干旱地区农林果蔬生产中重要的捕食性天敌之一，尤其在夏季高温、干旱的情况下，对果园、棉田的幼龄害虫和卵的捕食作用非常明显。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。