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!
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.cdlaserdistancesensor.com
In addition, proper shallow sowing can also reduce seed nutrient consumption, ensure early emergence, early tiller, multiple roots, sowing depth of 3 to 4 centimeters is appropriate, but the site preparation should be pragmatic, flooding should be sufficient.
How to get "early" in the "late" during the rush hour is the key to increasing the yield of late-seeding wheat. Production should be conducted as early as possible without prejudice to or impact on the yield and variety of the previous crop, and early tillage, early preparation, early sowing, no-tillage and simple soil preparation methods. Land that has been deeply plowed year after year can no longer be deeply turned, and low-lying land where humidity is too high can be used for no-tillage.
In order to promote the early germination and early emergence of late-seeding wheat, soaking and germination can be carried out by soaking seeds in warm water of about 50°C, soaking for 5 to 10 minutes, removing and stacking, and putting on wet sacks or straw bags, half a day later Turn it over once to ensure that the temperature is around 25°C. Sprinkle cool water when hot, and sprinkle warm water when it cools. If the day is not finished, be sure to spread out and dry to avoid root elongation.
In order to accumulate wheat late and late sowing, the accumulated temperature before winter should be insufficient, the number of tillers per plant should be less, and the number of tillers per plant should be less. Therefore, the sowing rate should be increased appropriately, relying on the main stem to form spikes, and higher yields should be obtained. The amount of mu for sowing should be 200,000 to 250,000 basic seedlings, and the maximum sowing amount should not exceed 300,000 basic seedlings.
Because of the late sowing of wheat, its growth period is shortened, and weak spring or spring varieties should be selected in the production. Such varieties have fast developmental stages, short nutrient growth time, large grouting intensity, and easy to achieve large spikes, multiple grains, and heavy grain weight. Precocious, high-yield purposes. At present, Yumai 18-99, Yanzhan 4110, Zhengmai 9023 are suitable for late seeding in our province.
In order to supplement late-sowing and late-spring sowing of wheat, the consumption of fertilizer and water is low before returning to early spring, and there is basically no shortage of water and nutrients before returning to jointing. It is generally not suitable for top-dressing and watering so as to reduce ground temperature and affect seedling development. It can be adopted in spring from March to March. Foliar spray of urea or compound fertilizer promotes seedling growth. For wheat fields with poor site preparation quality, groundless waste, easy to run or poor lye, winter and early spring return to the green period can be repressed and pressed shallowly to achieve the effect of lifting, protecting and warming. During the jointing stage of high-yielding wheat fields, no fertilizer or watering is performed to control spring flooding and promote winter glutinous rice to form a panicle. From mid-February to early March, the shallow ridge loose soil breathes, warms the soil, promotes early-onset seedling growth, and produces more roots. Premature fertilization water, otherwise not only affect the root growth, but also cause wheat seedlings in the spring large amount, long and closed fields, slow polarization, delayed growth period. However, in the middle and low-yield wheat fields, the management of spring water and small fertilizers can promote rooting, childbirth, and increase populations.
The jointing period is the key period for late-seeding wheat management. It can be used for fertilizer and water, and 7 to 10 kilograms of urea can be used to prevent late-maturing greenery. The promotion of flag leaf and the growth of its leaf and stem sections is very beneficial to increase grain weight.
Late sowing wheat yielding skills
The fertilizer consumption of late-seeded wheat was relatively less than that of fertilized and late-maturing wheat. However, due to the fact that the late-seeding wheat generally consumes more nutrients in the former crop, the available nutrients in the soil are reduced, and the late seeding and early seeding are small. Weak and weak water should not be used for water and fertilizer management. Therefore, it is extremely important to apply basic fertilizer and seed fertilizer, increase nitrogen and phosphorus fertilizer, and promote early-onset seedling growth. General Mushi farmyard fertilizer 3 cubic meters, 30 kg of ammonium bicarbonate, 30 kg of superphosphate, fertilizer urea or diammonium 5 kg. Organic manure and ammonium bicarbonate should be plowed. Phosphate fertilizer should be applied. Fertilizer urea or diammonium can be mixed and sowed with seeds. But it must be uniform and not excessive, so as to avoid root rotting and to reduce germination rate. Apply fertilizer first and then sow seeds. In particular, it should be noted that seed soaked with germination should not be mixed with the seed fertilizer.