139****8164 SMS from mobile phone: There are many small holes in the new leaves of cotton, there are many small black spots, how is this going on? What medicine is used to treat?
A: It may be caused by blind sucking harm. Blind stink bug in the top of the cotton growing point sucking hazards, can cause tissue necrosis, the formation of needle-like dark spots, with the growth of healthy tissue, the formation of irregular holes in the leaves (the edge of the tissue healed well, different from the disease caused perforation).
Blind stinkbugs are common and frequent pests in cotton production in recent years. They are a serious hazard and should be based on pest and disease prevention information. If new holes and dead stems appear in new stems and leaves, and when a large number of buds are shed, they will be used again. poor effect. The best medicines for preventing and killing mongooses include butene-fipronil, acetamiprid, nitenpyram, avermectin, malathion, cypermethrin and so on.
Laser rangefinder module, which has two application, one is mainly designed for long distance range finder, another is for secondary development industrial Laser Distance Sensor, which support ttl/usb/rs232/rs485 adapter output data.
With different range measuring program, JRT laser measure tools module, can satisfy customers` different requirements, 200m, 300m, 500m, 1000m, 1200m, 1500m, 3000m.
We have been in this line for 10 years, with a strong R&D ability and hard working, we are now a leading supplier of Laser Distance Meter modules in China.
Product Specifications:
Measuring Range (without Reflection) |
5-500m/5-1000m/5-1500m/5-3000m |
Accuracy |
±1 m |
Laser Class |
Class I |
Laser Type |
905nm |
Magnification |
6X |
Battery type |
CR2-3V |
Operating Temperature |
-10-50 ℃ (14-122 ℉ ) |
Size |
28*69*60mm |
Weight |
About 4g |
Operating Temperature |
-10-50 ℃ (14-122 ℉ ) |
Storage Temperature |
-25~60 ℃ (-13~140 ℉) |

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