1, water and fertilizer management. The fertilization of watermelon should be based on basal application, supplemented by topdressing to ensure sufficient water and fertilizer, but special attention should be paid to water and drought in time of growth and fruit enlargement. Water should be drained in time, and a new high fat film should be sprayed. Waterproof moisture evaporation, isolation of pests and diseases. 2, flower and fruit management. In the watermelon blossoming period, young fruit period, and fruit expansion period, spraying guttaglidin once can increase the guadi thickening, strengthen the nutrient delivery volume, prevent the occurrence of cracked fruit and deformed fruit, promote the rapid development of the melon body, and the melon type is beautiful. The juice is more delicious and makes watermelon produce high quality. 3, prevention and control of pests and diseases. For some diseases and insect pests in the growth period of watermelons, a new high-fat film should be sprayed in a timely manner to enhance the efficacy and to prevent the invasion of gas-borne pathogens. At the same time inhibit the reproduction of soil pests and diseases. This 50m distance measuring meter is made of two parts: the laser distance outside unit and the sole part laser measure module. Great distance range is from 3cm to 50 meters with ±1.5mm high accuracy. Digital distance measuring device is quick and reliable measure with one hand pushing the button. It is designed for hand helding, very convenient to put in your jacket pocket or trouser pocket. 50M Laser Distance Measurer,Mini Laser Measurer, Laser Measure 50M,50M Laser Distance Meter Chengdu JRT Meter Technology Co., Ltd , https://www.infrareddistancesensor.com
1>. Easy to Use. It is very easy to learn how to use a Laser Distance Meter, it can measure distance with pressing a single button.
2>. Safety. Using a laser distance meter to measure is much safer than using a measure tape, for users do not need to climb up and down.