JRT OEM Digital Laser Range Finder can measure faster, easier, and more effectively! Our Professional R&D team has over 16 years of experience on the laser and measurement field , so we can supply perfect OEM/ODM service according to user requirement ,and we have made out the mini size module in the world. Handheld Laser Meter，Handheld Laser Distance Meter，Laser Range Meter，Laser Distance Measurer Chengdu JRT Meter Technology Co., Ltd , https://www.cdlaserdistancemeter.com
The handheld laser distance measurer can measure distance,area,volume and pythagorean, and can switch to meter/feet/inch mode as you like.
Specially, there is three best-sale styles:
* Mini: D30 with our mini module U81 in it achieved the smallest size Laser Distance Meter in the world, which outlook is the same as a key,quite portable and cute. USB chargable design.
* Bluetooth: Diy Laser Range Finder With Bluetooth has been used to measure distances accurately in the both daily usage and industry application. The handheld laser distance measurer is widely used in variety areas, like project surveying, construction measuring, railway application etc.
* Longest: 150m equipped with a precise,easy- to-read digital LED display, which metal case brings you great hand feel.Power Supply: 2 x 1.5V AAA batteries.
High quality and high yield water and fertilizer management technology of cowpea
Kidney beans are fat but not fat, water and fertilizer management mainly includes three aspects: First, apply base fertilizer, timely fertilizer. The second is to increase phosphorus and potassium fertilizers, appropriate amount of nitrogen fertilizer. The third is to control first and promote it to prevent leggy and premature aging. Plant nutrition is the key to increasing inflorescence and pod formation. Sufficient basal fertilizer can promote the growth of roots and the activity of rhizobial bacteria, form more nodules, make the early stem vines grow robustly, differentiate more flower buds, and lay a foundation for high yield. Basal fertilizer generally applies 2,000 to 3,000 kilograms of organic manure per acre, 25 to 30 kilograms of superphosphate, and 50 kilograms of plant ash. Before the flowering and sprouting of cowpea, the requirement of water and fertilizer is not high, and the management is mainly controlled. The basal fertilizer is adequate, and it is generally no longer top-dressing. When the weather is dry, it can be properly watered. If there is too much water and fertilizer, the stems and leaves will grow in length, causing the inflorescence to rise and the number to decrease, forming a vacancy in the middle and lower parts. When the plant's first inflorescence pods were sitting, the following inflorescences appeared one time in combination with topdressing water, applying 10-15 kg of nitrogen, phosphorus, and potassium fertilizer per acre, and irrigation of 20-30 cubic meters. After scabs, the soil is often kept moist, and the top dressing is applied once every 2 to 2 weeks to keep the plants robust and flowering. Into the harvest period of soybean meal, the need for more water and fertilizer, can be followed by 1 irrigation fertilizer, 10 kg of urea per mu, 20-25 kg of superphosphate, 5 kg of potassium sulfate or 40 kg of plant ash, 20-30 cubic meters of irrigation water Meter. If the supply of water and fertilizers is insufficient, plant growth will decline, and flowering and falling will occur.