What are the issues that are about to be sown in red Chinese cabbage?

1, what kind of species?

Early-maturing varieties Ziting 1.2.3, Zihua, red hybrid; middle and late varieties Zifu, Ziting 6.8, Dingxiu Hongting and so on.

2. When do you sow?

Can not blindly sow. Generally from late July to late September can be planted, but the best sowing date is mid-August.

3, what fertilizer?

Due to the long growth period and long picking time of red cabbage, it is necessary to apply organic fertilizers more, and apply 130-150 pounds of organic-inorganic red Chinese wolfberry fertilizer per acre.

4. How to water when planting?

Clubroot disease is one of the most serious diseases of red cabbage pods. When planting, it is used to bury the roots of biological bacteria Baodisheng or 58% of Lei Duomi, 200 grams per plant.

5, what herbicide?

Before planting, use 33% grass to pass 100 ml of water and 30 kg of ground spray; after planting, spray with 6.9% Wei Pai.

6, Shi Ye surface fertilizer it?

Add foliar boron fertilizer, foliar calcium fertilizer, foliar potassium fertilizer and foliar zinc fertilizer in the prevention and treatment of pests; if the leaves are yellow, plant protection and dew.

special reminder:

To maintain soil moisture, but not water; do not play pesticides with large toxicity and long residue; pay attention to fine harvesting.

Micro Laser Distance Sensor

New product of U85 micro laser distance sensors use highly focused class 2 laser to detect objects or measure distances, and can return a measured value via varieties intface( serial, usb, rs232, rs485, bluetooth etc.). The electronic distance sensor is a very small Laser Distance Sensor, but high resolution up to 1mm and long distance measuring sensor - teachable measuring range of up to 30m. Extremely accurate distance sensing sensors, errors down to ± 1mm. And the mini sensors and measurements support continuous measurement function, great for compact solutions(eg: robots) with the smallest Laser Distance Sensor of the world!

U85 Micro Laser Distance Sensor & MCU control board connection

Parameters of U85:


Accuracy

±1 mm (0.04 inch)

Measuring Unit

mm

Measuring Range (without Reflection)

0.03-20m/0.03-30m

Measuring Time

0.1~3 seconds

Laser Class

Class II

Laser Type

620nm-690nm, <1mW

Size

41*17*7mm (±1 mm)

Weight

About 4g

Voltage

DC2.0~3.3V

Electrical Level

TTL/CMOS

Certifications

CE, FCC, RoHS, FDA

Operating Temperature

0-40 ℃ (32-104 ℉ )

Storage Temperature

-25~60 ℃ (-13~140 ℉)

Mini Laser Distance Sensor,Optical Laser Distance Sensor,Smallest Laser Range Sonsor,Laser Measuring Sensor

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