培养料和温度对茶薪菇生长发育的影响

在实验室内，以PDA为培养基接种茶薪菇，置于梯度为5℃、10℃、15℃、18℃、20℃、25℃、28℃、30℃、32℃、33℃、35℃、36℃的恒温箱中，培养观察茶薪菇菌丝生长。用配方I：棉籽壳77％、麦麸20％、石膏粉2％、蔗糖1％；配方Ⅱ：茶支屑77％、麦麸20％、石膏粉2％、蔗糖1％；配方Ⅲ（对照）：阔叶树木屑77％、麦麸20％、石膏粉2％、蔗糖1％，作为培养料接种茶薪菇，培养观察茶薪菇的菌丝生长和产量。以配方I为培养料，含水量设55％、60％、65％和70％，菌丝生长熟后置于温度为15℃、18℃、20℃、24℃、26℃培养室内培养，分别观察含水量和室内温度对子实体的影响。结果表明，茶薪菇菌丝生长比较适合的温度为18－28℃，子实体发育较适温度为18－24℃，培养料含水量以65％较好，配方I和配方Ⅱ适合茶薪菇生长，产量也较高，生物学效率达73．5％和65．6％。     

广西水利政策法规保障体系支持系统建设探讨

为规范广西水利行政管理工作，实现广西水利行业内部信息上传下达无纸化，设想创建广西水利政策法规保障体系支持系统。系统以数据库服务器为核心，采用Internet共享服务技术，建立一个网络办公信息处理平台，通过该平台实施水行政依法管理的办公自动化和信息共享。     

福建省水资源实施战略保护模式的研究

福建省水资源总量虽较丰富 ,但因其自然特性和受人类活动的影响 ,亦存在资源型缺水、水质型缺水和水的生态环境问题 .文中提出了保护水量、保护水质、保护水的生态环境的战略模式 ,论证了福建蓄水工程供水作用的不可替代性及发展生态型蓄水工程的模式 .福建全省水资源可利用总量为 4 79× 1 0 8m3 ,这个物理量将是水资源可持续利用规划的重要依据 .     

Change of water use efficiency and its relation with root system growth in wheat evolution

Raising crop water use efficiency (WUE) is the physiological basis to implement crop high efficiently using water. The present soil column and field experiments are designed to investigate the change of wheat WUE (Triticum aestivum L.) at whole plant level and root system growth in evolution and the relationship between WUE and its root system growth using 10 wheat evolution genotypes with different ploidy chromosomes sets. Results show that in wheat evolution from 2n→6n, WUE at whole plant level increases with the increase of ploidy chromosomes, and root system growth (root weight, root length) and root/shoot ratio of wheat decrease with the increase of ploidy chromosomes under dry and irrigated conditions. WUE is negatively correlated with root weight and root/shoot ratio of wheat in evolution, significantly. Root system growth has an adverse redundancy for WUE in wheat evolution, and the root redundancy reduces with the increase of ploidy chromosomes, which result in the increase of wheat WUE at whole plant level.     

Preliminary study on land surface characteristics over Huaihe River Basin

The analysis of the flux observation dada from the Huaihe River Basin Experiment (HUBEX) shows that, in semi-humid monsoon regions, latent heat flux is as important as sensible heat flux in most situations. Moreover, it can even dominate the sensible heat flux in cropland and paddy field. This is distinct from that for arid and semi-arid regions where the sensible heat flux is dominant. Under clear sky conditions, the soil temperatures in different vertical layers all exhibit certain diurnal variations, and the magnitude decreases with depth to less than 1°C at a depth of 60 cm. This depth is considered as the transition layer for the soil moisture variation. On the other hand, the vertical profile of soil water content varies with the soil texture and even weather conditions, and the layer with maximum soil water content can also be found in Jiangji station during June 1998.     

Influence of Reaction Parameters on Water Absorbency of Starch Grafted Superabsorbents

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飞来峡水利枢纽防洪调度对佛山市水情预报的影响

通过分析佛山市防洪的水文特征，提出了飞来峡水利枢纽建成后，因放闸流量的不可预见期，将对西、北江中下游佛山市的水情预报造成影响。     

阜阳市地表水水质分析

根据阜阳主要交通水系的基本特征,对城区各骨干河段地表水水质在 PH 值、COD、DO、氨氮、TP 等方面进行了水质检测和评价,结果表明各河水体已受到不同程度污染,并结合实际分析了污染原因。     

泵送高强粉煤灰混凝土的研制

通过掺加减水剂，调整水灰比等途径配制了泵送高强粉煤灰混凝土，并力求加在粉煤灰掺量以降低混凝土成本，介绍了泵送混凝土配合比，分析讨论了泵送高强粉煤灰混凝土的性能。     

黄河水中甘氨酸对铅(Ⅱ)与表层沉积物相互作用的影响

研究了黄河水中甘氨酸对铅(Ⅱ)与表层沉积物相互作用的离子交换率E%—pH的影响.实验结果表明:①在2×7.73×10-3mmol·L-1甘氨酸存在下,离子交换率降低;②随着甘氨酸浓度的增加,S型曲线与未加甘氨酸相比,先左后右移动;③甘氨酸存在下,转型表层沉积物比自干表层沉积物离子交换率高.