Abstract: Disclosed are an electronic cigarette and a vaporizer thereof which are suitable for adjusting air inflow with a single hand. The electronic cigarette vaporizer includes a vaporizer base and a liquid reservoir connected to the vaporizer. An atomizing cavity is formed by an internal cavity obtained by the connection of the liquid reservoir and the vaporizer base. An air inlet passage communicated with the atomizing cavity is arranged at the liquid reservoir. An adjusting knob at the entrance of the air inlet passage for adjusting air inflow is also arranged at the liquid reservoir. An air inlet is arranged at the adjusting knob. By rotating the adjusting knob, the air inflow can be adjusted by relative position changes of the air inlet and the entrance of the air inlet passage.

Abstract: The present disclosure belongs to the technical field of plant genetic engineering, and in particular relates to use of an ALR1 gene or an ALR1 protein of an aluminum ion receptor in regulating plant aluminum resistance. In the present disclosure, a primers includes an upstream primer with a nucleotide sequence shown in SEQ ID NO: 1 and a downstream primer with a nucleotide sequence shown in SEQ ID NO: 2. The primer is capable of improving the plant aluminum resistance and promoting growth of a plant root system, thereby promoting absorption of nutrients and water by the plant, which is of great significance for improving a yield of crops.

Abstract: Disclosed are an electronic cigarette and a vaporizer thereof which are suitable for adjusting air inflow with a single hand. The electronic cigarette vaporizer includes a vaporizer base and a liquid reservoir connected to the vaporizer. An atomizing cavity is formed by an internal cavity obtained by the connection of the liquid reservoir and the vaporizer base. An air inlet passage communicated with the atomizing cavity is arranged at the liquid reservoir. An adjusting knob at the entrance of the air inlet passage for adjusting air inflow is also arranged at the liquid reservoir. An air inlet is arranged at the adjusting knob. By rotating the adjusting knob, the air inflow can be adjusted by relative position changes of the air inlet and the entrance of the air inlet passage.