JRT mini laser rangefinder is a portable and cute diastimeter, which is a very convenient measurement tool. We offers best quality Handheld Laser Distance Meter, accuracy laser range finder, best laser distance measurer, bluetooth Laser Distance Meter.
Our Professional R&D team has over 15 years of experience on the laser and measurement field , so we have made out the mini size laser distance module in the world. For the miniature laser distance meter, whether used for interior design, construction, real estate, the D30 styel is engineered to meet your measuring needs with six calculation functions: Area, Height, Volume, Area Summation, Addition/Subtraction, and indirect Pythagorean Theorem.
Small Laser Distance Module,Mini Laser Measure,Smallest Oem Laser Modules,Mini Laser Distance Meter Chengdu JRT Meter Technology Co., Ltd , https://www.cdlaserdistancemodule.com
♪ Mini design
♪ Fits comfortably in hand and easily in pocket
♪ High Accuracy ±1.5 mm & Make Job Easier
♪ Measuring range: 3cm to 30m
♪ Automatic calculation of area and volume
Peanuts also need to make up "calcium"
Peanuts are hi-calcium crops (according to the determination that every kilogram of peanut pods need to absorb 2.7 kilograms of calcium), when the seeds germinate, they need calcium nutrition; calcium can strengthen nitrogen metabolism in plants, and promote root and nodule development. When peanuts are deficient in calcium, their roots are weak, their young stems and leaves are yellow, and the back of the leaves are spotted. The germs of the seeds turn dark, and the development of the mangoes decreases, and the empty pods and prunes increase. The calcium fertilizers currently used in production are mainly gypsum (ie, calcium sulfate), which can be used as a basal fertilizer and can be applied as 50 to 100 kilograms per mu. They can also be used as top dressings and applied to the fruiting area at the early flowering stage of peanuts. The application rate is 20 per mu. ~ 30 kg. After applying gypsum, peanuts in saline land can also regulate the pH value of the soil and reduce the damage of excessive sodium in the soil to the root system. According to local comparison tests, peanuts with calcium fertilizer generally increase production by 5% to 20%, and those with high levels can reach 30% or more.