What do you notice about winter vegetables?

What do you notice about winter vegetables?

1. Solar greenhouses enhance cold insulation. The rear window and exhaust fan are sealed with foam boards, straw curtains and other materials; the curtains are installed at the entrance, and a 5-meter-long windshield is set at the entrance of the greenhouse; the cold-proof channels are filled into straw, leaves and other insulation materials in time. In the shed, the front roof is covered with a 100 cm-high agricultural film to prevent cold; after the roof is too thin, 2 to 3 layers of straw or old insulation are covered for heat preservation; the back wall is made of earth or covered with old straw to increase the insulation. In the shed, two layers of agricultural film or non-woven fabrics are set at night.

2. Warm vegetables increase the light. For the greenhouse tomato, cucumber, eggplant, sweet pepper and other autumn and winter warm and warm crops, to adjust the appropriate temperature and humidity, in particular, pay attention to increase the light, the shed film should be regularly cleaned, scrub, and enhance light transmission.

3. The ground water is timely watered. The overwintering winter spinach, shallots and other overwintering roots and leeks are used to freeze the water and cultivating loose soil. The frozen water is best suited for the timing of “freezing and freezing at night” (that is, freezing in the ice at night and opening during the day). After thawing the frozen soil, the cultivator loosens the soil and forms cracks on the surface to ensure safe wintering of the seedlings.

4. Chinese cabbage, radish and other timely collection and storage. Chinese cabbage should be chopped and harvested in time before being frozen. The headings should be sunk in the direction of the south for 2 to 3 days and then be refitted for sale. If conditions permit, digging and storage will be carried out. The radish should be harvested before the frost arrives, and conditions will be stored in the pit from November 15th to 20th. The celery, rape and other leafy vegetables that are planted in the open field must be timely harvested before and after the winter to prevent freezing.

5. Hardy vegetables are sowed or planted in batches. Quick-cooked leafy vegetables and root vegetables such as greenhouse lettuce, rape, spinach, cherry radish, fennel, and oiled wheat can be sowed or planted in batches. Http://Content/d606bb40-e5c6-44ee-8d87-08b2fb4b35ea?cType=2

Laser Rangefinder Sensor

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

Measuring Accuracy

±0.5m~±1 m

Laser Class

Class 2

Laser Type

905nm

Magnification

6X

Battery type

CR2-3V

Operating Temperature

-10-50 ℃ (14-122 ℉ )

Size

28*69*60mm/TC25-43*φ25mm

Weight

About 15g

Operating Temperature

-10-50 ℃ (14-122 ℉ )

Storage Temperature

-25~60 ℃ (-13~140 ℉)


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