拱板仓粮面稻壳压盖与屋面喷水综合控温度夏试验

拱板仓储粮在夏季有粮温偏高、粮堆各层温差较大的特点,湖北钟祥国家粮食储备库利用地下井水,进行了自动控温喷水试验,结果表明:在夏季高温时段内,最高仓温24℃,最高粮温20℃、平均粮温14℃,最大限度地减少了仓内积热,缩小了仓顶与粮堆间的温差、有效的改善了储粮环境,延缓了储粮品质变化速度,解决了粮食度夏难的问题。

房式仓粮面压盖与屋面喷水综合控温度夏试验

对房式仓夏季储藏,粮面利用稻壳压盖、屋面利用地下井水进行自动控温喷洒度夏进行了试验,结果表明:在高温时段,房式仓内最高仓温24℃、最高粮温20℃、最低粮温8℃、平均粮温15℃。因此,本试验达到了改善储粮环境、延缓储粮品质、降低保管费用的目的。为中央储备粮常年处于低温、安全储藏提供了强有力的技术支撑。

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.