Yuan Dongjian, the demarcation town of Taixing City, said on the 4th of December that weeds in the wheat fields need to be controlled. However, the weather forecast has recently cooled down. Under such circumstances, wheat fields can not be used for weeding with isoproturon. Isoproturon is a selective urea-based systemic selective herbicide. The drug is absorbed mainly through the plant's roots, and is transported into the leaves with water in the catheter and inhibits the photosynthesis of green plants. The phytotoxic weeds showed chlorosis and yellowing at the tips of the leaves and leaves and finally died. Isoproturon will reduce the cold resistance of wheat seedlings. In the short term, the wheat field will suffer from low temperature frost. The wheat seedlings will be susceptible to freezing injury, and there is a phenomenon known as “frozen phytotoxicityâ€. Generally within 3 days before and after the onset of the cold current, or at night when there is a severe frost can not be used, otherwise it will produce "frozen phytotoxicity." The application of isoproturon in wheat fields should also be noted that it is not appropriate to use this product in the field where calcium phosphate is applied; crops with weak crop growth or frost damage, poorly-leached cropland, and heavy sand or poor drainage should not be used. In general, the average daily temperature of 4~5°C will have a relatively heavy frost. If this type of weather occurs within half a month after the application of isoproturon, it may cause heavier damage to wheat. The wheat seedlings may appear chlorotic. Growth is inhibited. Severe frosts occurred shortly after application, and the wheat damage was even more serious. According to information from the Jiangsu Meteorological Observatory, the province recently has a cooling process. The minimum temperature in most areas of the province will drop by more than 8°C, the minimum temperature will be lower than 4°C, and the wind strength on the ground will reach 5-6, gust 7-8. In this case, it is not appropriate to use isoproturon to control field weeds temporarily in order to avoid “frozen phytotoxicityâ€. If more weeds need to be controlled in the field, it can be used to control grass weeds and use tribenuron-methyl, chlorine Floxacin and other drugs prevent broadleaf weeds. In the field where wheat is applied to isoproturon and its compounding agent in the early stage of wheat field, measures should be taken to prevent freezing and protecting seedlings. In wheat fields, 250-300 kilograms of wheat straw and other crop stalks are spread per acre, which can preserve and prevent freezing. For the poor quality of the soil preparation and the large amount of soil in the hanging root seedlings, soil miscellaneous fertilizers can be applied to protect the seedlings. Watering before the low temperature can increase the heat capacity of the soil, bridge the earth seams, promote more tillers, and cultivate strong seedlings.
Fetal
Doppler applies ultrasonic doppler principle to obtain the movement
information of fetal heart from abdomen of pregnant women, enlarge the
signals, and output them from earphones so as to calculate the value of
fetal heart rate.
Technical Specification for Yonker YK-90C Fetal Doppler
All in one design
The probe and main units integrated together
High sensitive doppler probe
Crystal clear sound
Low power consumption
Compact and light
Ergonomic design
Easy to use
CE approved
Ultrasound Frequency 2MHz
Sensitivity From 10 - 12 weeks
How to use:
Before using it for the first time, make sure 2 batteries are in
Press the power button to power on, then adjust the volume
Lie flat with a cushion pillow, keep legs straight and relax
Attach the fetal probe to the abdomen to locate the position of the fetus and find out the best direction to the fetal heart
After hearing regular fetal heart sound, the FHR value will display on the screen in real time
Fetal Doppler
Fetal Doppler, Baby Fetal Doppler,Baby Heartbeat Monitor,Doppler Baby Heartbeat Monitor at Home,Fetal Heartbeat Monitor
Ningbo Queen Electronic Science Technology Co., Ltd , https://www.queenmeds.com