A: The cause of the disease has multiple aspects, including: first, planting varieties of empty fruit; second, partial application of nitrogen fertilizer, excessive stem and leaf; third, root injury, weak growth; fourth, Temperature in flowering period exceeds 35 degrees Celsius, or lack of light, or lack of nutrients due to water and fertilizer; Fifth, excessive concentration of plant growth regulators or repeated flowering of pods or pods, poor pollination and fertilization, undeveloped placenta, lack of seeds And jelly; sixth, long-term hypothermia, or long-lasting time, or lack of nutrients caused by upper results. Planters can take corresponding measures to prevent them according to these causes.
Suction blood vessel is also called vacuum collection blood vessel, according to the type of a total of nine categories. The details are as follows :1. Red head cover, no additives, used for the determination of some biochemical and immune indicators. 2. Yellow head cover, containing coagulant, can be used for biochemical and drug test determination. 3. Black cap, which is mainly used for the determination of erythrocyte sedimentation rate. 4. Light blue cap for the determination of coagulation factors. 5. Green cap for blood gas analysis and hematocrit measurement. 6. Light green head cover, liver function, blood lipid, blood sugar and so on were measured. 7. Grey cap, which is a special test tube for measuring blood sugar. 8. Purple head cover, mostly used for determination, blood type, blood routine, glycosylated hemoglobin and so on. 9 orange head cover, used for the determination of serum, hormones and so on.
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Type of blood vessel extraction:
1, red head cover, no additives, used for the determination of some biochemical and immune indicators.
2, yellow head cap contains coagulant, can be used for the determination of biochemical and drug tests.
3. Black cap, which is mostly used for determining erythrocyte sedimentation rate.
4. Light blue cap for the measurement of blood coagulation factor.
5, green head cap, for gas and blood analysis, hematocrit measurement.
6, light green head cover, liver function, blood lipid, blood sugar and so on.
7. Grey cap. This is a special test tube for measuring blood sugar.
8, purple head cover is used for determination, blood type, blood routine, glycosylated hemoglobin and so on.
9, orange head cover, mostly used for serum, hormone and other measurements.