Fertilizers play a huge role in promoting agricultural production and efficiency. Whether it is chemical fertilizers, organic fertilizers, or biological bacterial fertilizers, each has its own application mechanism. When used correctly, you can do more with less. If you use the wrong thing, you can use more. In recent years, farmers often pay no attention to details in technology and apply them based on experience. As a result, they have stepped into these misunderstandings ... Disclaimer: Some articles on this website are transferred from the Internet. If you have third party legal rights, please inform this website to deal with them. phone Gantry Type Video Measuring Instrument
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Watch out for the "dark area" of biological fertilizer
First, mixed with pesticides. In order to improve the fertilizer efficiency, some farmers often mix biological bacterial fertilizer with fungicides, insecticides, herbicides, etc., so that it is easy to kill biological bacteria.
Correct application method: In the application, if the application of bacterial fertilizer is inconsistent with the control of pests and weeds, the bacterial fertilizer can be applied first, and the herbicide should be applied after 48 hours. If you dress seeds, do not mix with seeds that have been mixed with fungicides. At the same time, it should be prevented from being mixed with unripe farm manure, which will directly kill the biological bacteria.
Second, mixed with a large amount of fertilizer. High concentrations of chemicals have toxic effects on the microorganisms in the fertilizer, especially when mixed with alkaline fertilizers such as ammonium bicarbonate and physiological alkaline fertilizers such as sodium nitrate, it can kill a large number of microorganisms in the fertilizer.
Correct application method: For fields that have been applied with chemical fertilizers for many years, nitrogen fertilizers cannot be directly replaced with biological bacterial fertilizers. Because the crops have dependence on chemical fertilizers, the crops cannot adapt quickly. Therefore, their agents should replace 30%, 40% and 60% respectively in the first, second and third years. Phosphorus and potassium fertilizers can only make up for it, not reduce it.
3. Mix different types of bacterial fertilizer. There are many types of bacterial fertilizers, and the active bacteria contained in them are different. It is not clear whether there is a mutual resistance between them. If they resist each other, the fertilizer efficiency will be reduced.
Correct application method: It is best to apply only one kind of biological bacterial fertilizer, and it is not suitable to apply multiple biological bacterial fertilizers containing different beneficial bacteria at the same time, and it is not recommended to frequently apply different types of biological bacteria.
Mo into the "deep water zone" of fertilizer
First, calcium magnesium phosphate fertilizer for topdressing. Calcium-magnesium-phosphorus fertilizer is not easy to dissolve in water, its fertilizer effect is slow, and it is used for topdressing, especially after the middle stage of crop growth, its utilization rate is low and its effect is poor.
Correct application method: Calcium, magnesium and phosphorus fertilizers can only be used as a combination of base fertilizer and organic fertilizer, and it is also effective as a seed dressing fertilizer.
Second, direct superphosphate dressing. Superphosphate contains 3.5% -5% free acid, which is very corrosive. Direct seed dressing will reduce the germination rate and emergence rate of seeds.
Correct application: For trenching, apply deep trenches. When planting fertilizer, it should be applied 5-6 cm below or beside the seeds, separating the fertilizer from the seeds with soil.
Third, zinc fertilizer and phosphate fertilizer mixed application. Due to the serious "antagonism" between zinc and phosphorus, such as the mixed application of zinc sulfate and calcium superphosphate, the fertilizer effect of zinc sulfate can be suppressed to a large extent, and its effectiveness is reduced.
Correct application method: Zinc fertilizer and phosphate fertilizer should be applied separately. Phosphate fertilizer as base fertilizer, zinc fertilizer as seedling fertilizer, or zinc fertilizer as base fertilizer and phosphate fertilizer as seedling fertilizer.
Beware of organic fertilizers "causing trouble"
1. Excessive application of organic fertilizer can easily burn seedlings, resulting in a large amount of nutrients such as phosphorus and potassium in the soil, resulting in imbalance in soil nutrients. At the same time, it causes the accumulation of nitrate ions in the soil, which causes the crop nitrate to exceed the standard, and the concentration of the soil solution is high, which is not conducive to root water absorption.
Correct application method: It is not better to apply more organic fertilizer, generally 1000-1500 kg per mu.
Second, the organic and inorganic coordination is not enough. Organic fertilizers are full of nutrients, but the content is low. During the vigorous growth period of crops, the application of organic fertilizers alone cannot fully meet the crops' requirements for nutrients.
Correct application method: Add an appropriate amount of ammonium carbonate or urea during the application to adjust the carbon-nitrogen ratio and prevent the phenomenon that microorganisms compete with crops for nitrogen.
Third, unfermented raw fertilizer. After being decomposed and fermented by microorganisms in the soil, the ammonia gas generated can easily cause root burning and poisoning of crops, and some can also breed weeds and spread diseases and insect pests.
Correct method: build a septic tank to ferment, or add compost piles to moisten with water and seal with mud to make the temperature reach 35 ℃ -40 ℃. After 25-30 days, fermentation can be completed. Fermentation can kill insect eggs and weed seeds, which is safer and more effective when used. 
1. Adopting a high-power industrial high-definition color CCD and a continuous automatic zoom depth lens with fixed frame position, the zoom rate does not require calibration, greatly improving work efficiency and measurement accuracy.
2. Images can be output to electronic computer software for surveying and mapping engineering storage. It can be used for photography, copying, and storage.
3. It can inspect the specifications of buried holes, pipe trenches, etc. on the upper surface of the tested object block. The image and color tone on the surface of the product workpiece can be clearly seen.