"Pharmaceutical and fertilizer integration" technology refers to the application of a combination of disease-preventing chemicals and foliar fertilizers in a potato disease prevention work, one-time simultaneous spraying, the technology for the prevention and treatment of potato early (late) disease Especially outstanding. It has been widely used in northern China.
Principle of use: the drug does not produce an acid-base reaction,
Advantages: combination of disease prevention and treatment and supplemental nutrition, not only good disease prevention effect, low cost of medicine, saving mechanical operation cost, but also playing an important role in improving tuber quality and increasing tuber yield and starch content.
The commonly used method is a combination of a protective agent with calcium magnesium borate, a systemic fungicide, potassium dihydrogen phosphate and an insecticide.
The use of medicine and fertilizer integration technology:
1. The first spraying: It is often difficult to determine the first spraying time in production. It should be sprayed on the basis of forecasting and forecasting according to the growth stage and climate of the plant. Generally, the agent should be sprayed at the beginning of the potato bud, and the early-maturing susceptible varieties are even earlier. )
2, the second spray: the potato enters the bud stage, at this time the early blight enters the onset period, continue to apply 750g calcium ferrite magnesium fertilizer + 180g mancozeb water dispersible granules or 80g suspension agent per acre to promote plant growth.
When the machine enters the ground, it will damage the furrows in the plot. When spraying, pay attention to the fixed lanes, reduce the damage to other furrows, and reduce the spread of germs.
3, the third spray: the potato into the flowering period, the plant has been fully opened, and began to potato, the requirements for fertilizer and water is relatively high. If the weather is dry, continue to use protective fungicides, 1000g calcium ferrite and magnesium fertilizer +180g mancozeb water dispersible granules per acre. In the case of continuous rainy weather, late blight will be prevalent, so the type of the drug should be changed. The drug is changed to the systemic fungicide cream urea cyanide zinc, and calcium ferrite magnesium 1000g + 180g frost urea cyanide zinc per acre.
4, the fourth spray: the potato into the potato period At this time, the potato has high requirements for water and fertilizer, and the late blight also enters a high-incidence period, changing the type of fertilizer, 50g thousand kings per acre + 180g enoylmorpholine manganese zinc. Increase the prevention and control of late blight.
If there is a pest, use it with a pest control. Test it before use to see if it will react. If there is precipitation after mixing, do not mix pesticides.
5, the fifth spray: tuber expansion period, at this time the potato has the highest requirements for water and fertilizer, should continue to increase the number of fertilizer use, the use of the treatment of late blight sulphate manganese cyanide 2.5kg / ha + 200g potassium dihydrogen phosphate.
6. The sixth and seventh spraying: the early maturing potato enters the mature stage, and the late-maturing variety is still in the tuber expansion period. At this time, the spraying of the medicine and fertilizer can be continued, the plant survival period is increased, and the tuber infection of the potato is controlled, and the fertilizer is compounded. The ratio is: 200g potassium dihydrogen phosphate per acre + 200g frost urea manganese zinc + 180g enoyl manganese zinc. The last mu was used with enoylmorpholine manganese zinc 180g + 200g potassium dihydrogen phosphate. Promote the aging of tuber skin and improve the storage resistance of tubers.
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This disposable Non-Inactivated virus sampling tube is an upgrade from the Hank's solution. Additional various components, such as BSA, HEPES, amino acids, cryoprotectant, etc., are added to enhance the virus integrity. It can be used for nucleic acid extraction of virus, mvcoplasma chlamydia and ureaplasma samples and later virus isolation.
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