9 use errors of pesticides
First, killing insects to kill, killing Every time the insecticides insist on killing and killing the worms, there is a great tendency to kill them. In fact, there is absolutely no need for them.... As long as the general insecticide can reach its ability to lose fertility and damage to plants. Just fine. All pesticides use more or less toxic effects on plants at the same time. Too much pursuit of killing and killing often causes phytotoxicity. Second, as long as you see the insects, kill After inspection, it is found that the number of insects reaches the threshold of harm, and it is necessary to kill insects when it has a harmful effect on plants. Third, superstition special effects In fact, the more special drugs are more harmful to plants, the choice of insecticides can be achieved as long as it can control the damage of plants to plants. Fourth, the abuse of insecticides Do not prescribe the right medicine, abuse of insecticides, often when the discovery is invalid, has lost more than half. Five, only pay attention to adult worms, ignore eggs Only pay attention to killing adults, ignoring eggs, and failing to take precautions when the eggs are heavily hatched. 6. Long-term use of a single insecticide Long-term use of a single insecticide can make the insect body resistant, and it is best to use several pesticides in an alternating manner. Seven, free to increase the dose Failure to follow the indicated dosages will increase the resistance of the insects and may easily cause phytotoxicity. Eight, check immediately after insecticide Many medicinal herbs will gradually die after 2 to 3 days, and the exact effect will not be seen until 3 days later. Nine, do not pay attention to water consumption and application time Different water consumption has a great influence on the effect of pesticides, especially in the high temperature and dry season, and the water consumption is increased. At the same time, the application time often determines the effect, especially for the pests that come out in the evening. Magnetostrictive level sensor is composed of three parts: probe rod, circuit unit and float. To measure, the circuit unit generates pulses of current that travel down the magnetostrictive line and generate a circular magnetic field. A float is arranged outside the probe rod, and the float moves up and down along the probe rod with the change of liquid level. The float generates a magnetic field at the same time because it is fitted with a set of permanent magnets. When the current magnetic field meets the float magnetic field, it produces a "twisting" or "return" pulse. The time difference between the "return" pulse and the current pulse is converted into pulse signals to calculate the actual position of the float and measure the liquid level. Magnetostrictive Level Sensor,Magnetostrictive Level Transmitters,Magnetic Type Level Gauge,Liquid Level Sensor,Magnetostrictive Level transmitter Xi'an Gavin Electronic Technology Co., Ltd , https://www.cngamicos.com