Response of Over-summer Hydroponic Lettuce to Nutrient Solution Temperature Control

Temperature, as an important feature of hydroponic nutrient solution, is closely related to dissolved oxygen content of nutrient solution and growth status of plant roots. How to precisely adjust the temperature of nutrient solution is the key to obtain high quality and high yield of hydroponic vegetables over summer. With Lactuca sativa vat. crispa ＇Luosheng No.3＇ as the test material, the effect of chiller cooling technology on the temperature of nutrient solution, as well as on the yield and quality of Luosheng No.3, in over-summer hydroponic cultivation was studied. The results showed that the chiller cooling technology controlled the nutrient solution temperature in a reasonable range （（20 ± 1）℃） and promoted the growth and dry matter accumulation of Luosheng No.3, instead of affecting the quality. In short, the chiller cooling technology is applicable to the temperature regulation of nutrient solu- tion in hydroponics over summer.

“控水论”在鼻部炎症性疾病中的应用

鼻腔及鼻窦的炎症性疾病都是以水液代谢紊乱为主要特征的,而水液属于阴液范畴,要实现对水液的合理调控,就必需引导阳气在与鼻相关的脏腑、经络中合理流动,这其中最重要的运动方式就是升降和出入。因此,运用"控水论"来治疗鼻部炎症性疾病,实际上就是在遵循五行规律的基础上充分调动阳气在脏腑和经络中升降与出入的过程。