Planting winter jujube in winter

Answer: In November, the jujube tree entered a dormant period, which is a favorable period for planting. Planting gardens should be selected as flat lands with adequate light and fertile soil. The planting time is appropriate after the fruit trees are defoliated and the soil is frozen. Seedlings are selected for their complete roots, good healing of grafted parts, and no disease and pests. The depth of planting is such that the rhizome position of the seedlings is slightly higher than the ground. After irrigation and sinking, the rhizomes are flat with the ground plane. After planting, it poured water once. After the seedlings are planted, they must be immediately painted white and tied with grass to ensure their safe wintering. The 30 cm mound of seedlings at the base of the seedlings should be protected against cold, and then thawed in the spring of the next year for 2 to 3 times.

Laser Distance Sensor

Leading Laser Measure Module Factory in China
The World's First single transmitting single receiving design laser module, which has a big help to reduce producing cost and power consumption of the laser distance sensor.
This Laser distance sensor has high Accuracy up to ±1 mm, working as phase measure, which support RS232/RS422/RS485/Arduino to TTL communication.
This laser distance module is widely used in the Laser Distance Meter industry, also a very good choice for the Industrial applications. Most of measuring tools manufactures is purchasing from us in China.

Product Specifications:


Accuracy

±1 mm (0.04 inch)

Measuring Unit

meter/inch/feet

Measuring Range (without Reflection)

0.03-150m

Measuring Time

0.1~3 seconds

Laser Class

Class II

Laser Type

635nm, <1mW

Size

45*25*12mm (±1 mm)

Weight

About 10g

Voltage

DC2.0~3.3V

Electrical Level

TTL/CMOS

Frequency

10Hz

Operating Temperature

0-40 ℃ (32-104 ℉ )

Storage Temperature

-25~60 ℃ (-13~140 ℉)

Range Sensor,Laser Distance Module,Distance Sensor,Laser Measure Sensor

Chengdu JRT Meter Technology Co., Ltd , https://www.infrareddistancesensor.com