In greenhouses, cucumbers are harvested in winter and spring because of their high yields and qualified prices. They are now at the grafting stage and must undergo certain preparatory work before planting.
(1) Cover the greenhouse film and the greenhouse disinfection. Cover the greenhouse film one month before planting, and disinfect the greenhouse. Disinfect 200 ml of dichlorvos, add 1.5-2 kg of sulfur, mix with sawdust, and ignite. - 2 days, can effectively kill the shed eggs. For the more severe sheds of root-knot nematodes, 80 kg of lime-nitrogen can be applied to Mushi to mix well.
(2) Site Preparation and Base Fertilizer: Basal fertilizer is dominated by organic fertilizer, and 10,000 kilograms of organic manure is fully decomposed by Mushi, and deep-turned by 40 cm. It is also possible to apply fermented rot crushed grass, wheat straw, rice husks and other organic materials year after year. The best measure is the application of straw bioreactor technology, which can effectively increase the ground temperature, increase soil organic matter, and improve the soil environment. It can also reduce the occurrence of diseases and improve product quality, and the effect of increasing production is outstanding.
(3) Making bed and cover film: Cucumber in greenhouses in winter should be raised from a high bed and drip irrigation or under-membrane irrigation should be adopted. The bed width is 1.2 meters and height is about 15 centimeters. Can also be colonized after the first colonization.
(4) Determination of the planting period: Winter and spring cucumbers are generally planted from late November to early December.
(5) Planting methods and density: About 3500 plants per acre were cultivated. Planting seedlings must be strictly screened, remove diseased seedlings, weak seedlings, and unqualified seedlings that are grafted. Open the planting hole at a spacing of 28-30 cm, plant the seedling into the hole, pour the water, and then cover the film.
Laser distance measure is a very convenient tool for various types of applications in industries, construction and house decoration. Laser distance meter is a very useful device which gives accurate measurement of distance, area and volume especially in large areas such as rooms, apartments, buildings, real estates, factories, warehouses, infrastructures, gardens, roads, and many other applications requiring accurate results for distance , area and volume measurement.
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rangefinder, which let you simply take measurements with one hand. No matter
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greater accuracy and in more situations, saving you money and time.
Specification:
|
Product Model: |
JX40 |
|
Accuracy: |
±1.5mm (0.06 inch) |
|
Measuring Unit: |
metre/inch/feet |
|
Measuring Range: |
0.03~40m (0.01 to 131 ft) |
|
Measuring Time: |
0.1~4 seconds |
|
Laser Class: |
Class II |
|
Laser Type: |
635nm, <1mW |
|
Waterproof & Dustproof : |
IP54 |
|
Auto Laser Off: |
60 seconds |
|
Automatic Power-off: |
480 seconds(8 minutes) |
|
Lighting: |
white LED |
|
Datum Option: |
Can choose Front edge or end piece edge as datum |
|
Battery Status: |
Y |
|
Signal Strength Display: |
Y |
|
LCD display: |
2 inch large screen |
|
Display illumination and multi-line display: |
Max 2 displays |
|
Data Memory: |
Y (allow 20 values) |
|
Backlight display: |
Y |
|
Continuous Measurement: |
Y |
|
Min/max Measurement: |
Y |
|
Addition/Subtraction(Distance/Area/Volume): |
Y |
|
Area/Volume/Pythagoras Measurement: |
Y |
|
Battery Type: |
AAA alkaline battery(2*1.5v ) |
|
Weight: |
about 80g |
|
Dimensions(L*W*H): |
4*2*11.5cm |
|
Auto correction and error report technology: |
Y |
|
Operating Temperature: |
0-40 ℃(32-104 ℉ ) |
|
Storage Temperature: |
-20~60 ℃ (-4~140 ℉) |
Laser Distance Meter,Laser Distance Measure,Laser Rangefinder,Laser Distance Gauge
Chengdu JRT Meter Technology Co., Ltd , https://www.rangingsensor.com