A simple, inexpensive method was developed for determining endogenous IAA, ABA and JA concentrations in plant tissue.

Cryst. Res. Technol. 36 2001 4-5 465-470 Pyrophosphate doped KDP crystal was grown from aqueous solution by the temperature lowering method. Light scatter in KDP crystal was detected with an ultramicroscopic method. It has been proved that light scatter in KDP crystal aggravated when pyrophosphate was doped into the growth solution, which distributed non-uniformly in prism and pyramidal sectors of the KDP crystal. The different effects of pyrophosphate on prism and pyramidal sector of KDP crystals can explain this case. The method of eliminating light scatter in pyrophosphate doped KDP crystal is discussed.

For the protection of Jinan springs, based on the monitoring data of groundwater quality during dry seasons in 2013, the chemical characteristics evolution of karst water was analyzed by RockWare Aq·QA software, combined with hydrogeological conditions in jinan spring area. According to the groundwater quality standard, the present situation of karst water was evaluated. On the basis of the F value of evaluation, the groundwater quality zone is partitioned by ArcGIS software. The results show that: (1) the groundwater chemical types complicated from the single type (HCO3–Ca and HCO3–Ca·Mg) in 1950s to some new types (HCO3·SO4-Ca,Cl·HCO3-Ca and Cl·SO4-Ca); (2) karst water chemical environment has changed, so that karst erosion rate accelerated; (3) the groundwater quality partition shows most of this area is good water, only part of this area is IV,V type water (poor water). Research suggests Jinan karst water quality has been deteriorating.

Inland plain shallow saline water has great exploitation potentiality. Based on field water testing, water level monitoring, pumping test, as well as indoor leaching experiment, applying mathematical statistics, Pipers trilinear nomograph and PHREEQC chemistry simulation methods, saline water area of the town of Sungeng Jiyang was studied. The results showed as follows: (1) Inland shallow groundwater presents “weather-evaporative” dynamic type; (2)The shallow saline water and middle-deep groundwater belonging to different flow system; (3) Because of the creeping flow and aqueous medium riched in clay, inland shallow groundwater mineralized significantly. In saline water area inland plain, the unique features of groundwater circulation result in brackish water dynamic relative stability.