purpose of usage:
The human pertussis toxin (PT) enzyme-linked immunosorbent assay kit is used to determine the content of pertussis toxin (PT) in human serum, plasma and related liquid samples.
After the end of the autumn harvest, many workers stored unfinished pesticides and purchased chemical fertilizers that were used in the second year in the living room. This would have a great harm to human health.
It is understood that most pesticides and chemical fertilizers are vola.......
It is understood that most pesticides and chemical fertilizers are vola.......
Humidity causes pigs to be mainly affected by temperature. For example, pigs in summer are susceptible to diarrhoea, often because the pig house is damp. This dampness is not only damp in the air, but more serious is the dampness of the ground and the humidity in the incubator. When the gr.......
Long-term rain or irrigation watering too much, low-lying waterlogging or plugging the bottom hole of the flowerpot, causing waterlogging and oxygen deprivation, flower damage, brown root decay, yellowing of leaves, wilting of leaves, falling leaves, falling flowers, and withering Branch, long.......
Flammulina velutipes can be planted in bags, bottles and beds, but most of them are planted in bags because of the high yield, short cycle, and low cost of the bags, which is suitable for farmers. How to do the cultivation of bagged mushroom Needless to cultivate? First, a reasonable arrangeme.......
In recent years, with the improvement of the level of science and technology and the rapid development of the pharmaceutical industry, many new products and technologies have emerged in the pharmaceutical packaging industry. How to make these achievements know.......
1. Seedling disease comprehensive control seedbed should be selected in the sheltered sunny place, you can directly use the carbendazim seedbed spray sterilization, in order to facilitate the growth of cotton seedlings to reduce the occurrence of browning wilt and delay the spread of the wilt........
Before the crabs are listed on the market, the selection of pesticides should be done properly. Otherwise, the catch rate and commodity rate of crabs will be affected, which will seriously affect the breeding efficiency.
First, external agents, generally choose bleach, chlorinated sea or .......
First, external agents, generally choose bleach, chlorinated sea or .......
Potted osmanthus flowers often bloom very slowly or not open. How to make sweet-scented osmanthus flowering, flowers fragrance, need to master the following major aspects:
Variety selection: different varieties of sweet-scented osmanthus, flowering time is not the same. Lunagui, Sijigui, .......
Variety selection: different varieties of sweet-scented osmanthus, flowering time is not the same. Lunagui, Sijigui, .......
Practice has shown that corn stems increase production. The specific approach is: In the middle and late stages of corn silking, the stems between the top 2-3 leaves of the plant without hand-twisting will be folded into corners by hand but not broken. After 4-5 days after the stem is broken, .......
It is very important to strengthen the management of temperature and humidity after the colonization of tomatoes in greenhouses. It is necessary to grasp the following priorities and do more with less. Seedling period: maintain daytime temperature 25°C~28°C, nighttime 15°C~2.......
1. Create farmland shelterbelts. Farmland shelterbelts have the effect of lowering temperature, increasing humidity, weakening wind speed and reducing evaporation and transpiration, which can significantly reduce the damage of dry hot wind. 2. Select dry and hot wind resistant wheat varieties........