Correctly uncovering the grass thatch is extremely important for the production of vegetables in the greenhouse in winter. Here, we remind vegetable farmers that uncovering the grass thatch should be scientific. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone Chengdu JRT is a world leader in the design and manufacture of highly accurate, precise and digital and analogue laser measurement sensors, including serial laser distance transducer,usb laser distance module,distance module ttl laser sensor rs232/RS485/Bluetooth. These Laser Distance Sensor products are widely used in many smart industrial precise measurement soluitons: robot,crane,etc. This laser distance measure technology, combined with the high speed, 1mm high resolution and accurate measurement, specially the micro laser sensor(41*17*7mm),will confidently and accurately solve your precision measurement problem. Laser Distance Measurement,Laser Measurement Sensors,distance measurement sensors,Smart Measure Sensor Chengdu JRT Meter Technology Co., Ltd , http://www.irdistancesensor.com
Revealing the grass thatch in the morning: Many vegetable farmers believe that the sun shines on the greenhouse and then the thatch is opened. However, most vegetable farmers can't answer to the extent of the exposure.
Uncovering the grass thatch in the morning cannot be based on your feelings. The temperature in the shed should be used to judge whether the time of uncovering the grass thatch is appropriate. The method is: the temperature in the shed will decrease when the grass thatch is uncovered, but the decrease should not exceed 1 ℃. It's early; the temperature in the shed has not dropped when the grass thatch is uncovered, indicating that the grass thatch is uncovered late.
Covering grass thatch in the afternoon: At present, vegetable farmers cover grass thatch in the afternoon. Some are covering the thatch after the sun sets, and some are covering the thatch at 3:30 to 4 in the afternoon. In fact, these are not scientific. It should be determined according to the temperature in the shed. Thatch time. The method is: when the temperature in the shed reaches 17 ℃ ~ 18 ℃, start to cover the grass thatch, the temperature in the shed may rise after the thatch is covered, and the temperature should not exceed 1 ℃.
Uncovering the grass thatch for a long time: After a long period of low temperature, rain and snow, and a cloudy day, it suddenly becomes sunny. Do not uncover all the grass thatch to prevent "flashing". The flower thatch should be uncovered in the first 3 days (one or two every other), and the area to be uncovered gradually increases. After two days, it will be fully uncovered (the roller shutter shack can open a section first, and then gradually increase).
Uncovering grass thatch in winter shed requires science