Rice Blight Control Technology

Rice Blight is one of the most important diseases of dry rice seedlings in rice. Its main causes are low temperature, large temperature difference and alkaline soil. The main symptoms of field disease include post-emergence seedling withered, easy to pull off, and stem. The base was rotted, with rotten pear smell. The whole disease with a heavier disease died. The base of the diseased plant had red moldy material. The blight is divided into two types, physiological blight and pathological blight. Once the disease is difficult to control, the prevention and control should be mastered. Its main control measures are as follows:
First, agricultural control: choose sheltered sunny, high-lying flat, fertile plots of loose land for seedbed, seeds before sowing to dry, the amount of sowing can not be too large, scientific fertilization, water management, timely ventilation and hardening of seedlings.
Second, the application of plant growth regulators: in the seedlings 1 to 2 leaf stage sprayed rooting agent, every 2 grams of water 30 kg spray 40 square meters of seedbed to promote early root hair growth and robust seedlings.
Third, drug control: seed treatment before sowing and disinfection of the sacral plate. Before sterilization, rice seeds must be sun-dried and seeded, and then disinfected; seedlings should be controlled immediately after the onset of disease, and crops or disease centers should be sprayed for prevention and treatment at the beginning of cropping.
(A) the preferred transplanting Ling Yu Yu disease prevention: breeding seedlings per square meter with transplanting spirit 1? 2 ml watered 3? 5 kg, when the base fertilizer can be used together dissolved in water, stir, and then evenly poured in the agent Bed soil, sowing seeds and cover the soil; in the seedlings 1? 2 leaf stage or early onset of the disease and then spray evenly.
(2) 50% 2% enemy water and 3-5 kg ​​water will be sprayed on the boring machine before sowing per square meter during the breeding period, and a filling pocket will be used at the time of 1-2 leaf stage or early stage of the disease. double effect.

Industrial Laser Distance Sensor, we also call it secondary development laser distance module, which support TTL level and CMOS. The laser range sensor can be widely used in professional surveying, mapping, construction, robots, hunting arrows, industrial monitoring and automated measurement applications in electricity, transportation, etc. Our laser distance module supports data communication with RS232, USB with a simple adapter. The results of laser distance sensor can be evaluated with Arduino. We are always looking ahead, hoping we can make every measurement simple in life!

 Industrial Laser Distance Sensor

Parameters of M703A:

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

72*40*18mm (±1 mm)

Weight

About 21g

Voltage

DC2.0~3.3V

Electrical Level

TTL/CMOS

Frequency

10Hz

Operating Temperature

0-40 ℃ (32-104 ℉ )

Storage Temperature

-25~60 ℃  (-13~140 ℉)

Industrial Laser Distance Sensor

Laser Distance RS232,Arduino Distance Module,Laser Module RS232

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