Jianhui, vegetable cultivator, Gengyuan Township, Fugou County Q: The phenomenon of incomplete seedling emergence often occurs during the vegetable seedling raising process in greenhouse. One is that the same site of the same seedbed has different seedling emergence times, and has successively worsened for several days, making it difficult to manage seedbeds. Another is in different parts of the same seedbed, and some parts emerged early, and some parts emerged late.
A: The main reasons for the former situation are mainly poor seed quality, such as inconsistent maturity, new seeds, and mixed Chen seeds, and inconsistent sprouting caused by uneven panning during germination. The reasons for the occurrence of the latter situation are as follows: 1 The seedbed is uneven, and the bottom water is poured unevenly, causing the wet place to emerge first and the dry place not to emerge. 2 The temperature is different, the north of the bed is sunny, higher than the temperature in the southern part of the shade, and the emergence is faster. 3 The wiring of the heating line is irrational. The temperature at the line density is high and the emergence is fast. 4 The thickness of the cover soil was inconsistent after sowing, and the emergence of the cover at the thick soil was late. 5 Insulation condition of seedbed cover is poor, and some places have air leakage, and the temperature is low, affecting seedling emergence. 6 Frequent leakage of rain makes the soil in the bed soil too wet, resulting in low temperature and high humidity, which is not conducive to emergence. 7 There are lice, cockroaches, rats, and other damage. 8 Using the method of watering after sowing first, irrigate alluvial water to make the seeds unevenly distributed.
According to the reasons for the emergence of malaria, the following control measures can be taken: 1 before germination test sowing, use fast germination, high seed germination rate. 2 During the soaking and germination process, diligent turning. 3 Prepare nutrient soil to make bed soil fertile and free of disease, insects and rodents. 4 The bed should be leveled and filled well before filling. 5 sowing uniform, uniform cover. 6 Strengthen management after sowing so that the temperature, humidity, and air permeability of each part of the seedbed are consistent.
Non invasive ventilator is Bi-le vel PAP (Bi-level Positive Airway Pressure) device intended to provide non invasive ventilation for patients with R espiratory Insufficiencny. It is intended for adult patients by prescription in the home on hospita V/institutional environment. With its Target Tidal Volume function and other excelle nt comfort features and ffective perfurmance, it offers each patient pe rsonalized ventilation support.
Non Invasive Ventilator,Non Invasive Ventilation,Non Invasive Mechanical Ventilation,Non Invasive Positive Pressure Ventilation
Shenyang RMS MEDICAL TECH CO.,LTD , https://www.medicalrms.com