xeromorphism

Evaluation and Screening of Three Types of Cultivar Population of Taro with Numerous Cormels in Xeric Environment;

多子芋三个品种群在旱生环境中的评价与筛选

A study on leaf structure and the diversity of xerophytes ecology adaptation;

从旱生植物叶结构探讨其生态适应的多样性

Object To study the chemical constituents of whole plant of Selaginella stauntoniana Spring.

目的　研究旱生卷柏的化学成分。

Water Retention and Transpiration of Xerophytes Mainly Ceratoides;

驼绒藜属等几种旱生植物的持水力和蒸腾作用研究

In order to compare the phenological characteristics among mesophyte,xerophyte,and psammophyte,nine phenological phases of 48 typical plant species in Minqin Desert Area were observed for 20 years(1985—2004).

研究结果表明:从中生植物到旱生植物再到沙地旱(中)生植物,同一物候期的多年变幅增大;从旱生植物到沙生植物的物候期的多年变幅大于从中生植物到旱生植物的多年变幅;不同植物的物候期差异主要表现为从花蕾花序期开始到果实脱落末期的各个物候期,从中生植物到旱生植物再到沙地旱(中)生植物,这些物候期表现出逐渐延迟的趋势;当地冬季漫长,夏季持续日数较长,秋季最短,春季和秋季物候频数分布较多,植物活动日数相对较短;运用聚类分析方法研究包括中生植物、旱生植物和沙地旱(中)生植物的物候特征,能更好的从不同植物类型来揭示植物物候特征。

Study on the root distribution and soil water dynamics under Phragmites arid area;

干旱区旱生芦苇根系分布及土壤水分动态

Twelve primitive upland rice accessions of germplasm were studied in terms of main agronomic traits, rice quality and drought resistance,and resorted to comparative analysis with various strains of paddy rice.

研究了12个山栏稻原始种质的主要农艺性状、品质特征及抗旱生理特性，并与水稻不同类型的对照品种进行比较分析。