The core message: In traditional agricultural farming, farmers have the habit of using fertilizers with rainfall or irrigation. However, due to the uncertainty of the amount of water used, the nutrient content of the fertilizer used is low, the composition is single, and the water solubility is poor. As a result, the flushing effect is not ideal. For example, if the local nutrient concentration is high, the seedlings will be burned and the nutrient concentration in the place far away from the water source will be too low and there will be no fertilizer effect.
Chongfei easy to use -
But not with fertilizer
Some peasant friends feel that fertigation is simply to flush fertilizer with water! In fact, this is a wrong understanding. The principle of fertigation and application of other fertilizers is the same, but also deep and concentrated application. For some shallow-rooted leafy crops, crops that are inconvenient to top-dressing may be flushed with water, but the amount of water must be controlled not to be too little nor too much, so as to achieve even distribution of nutrients. For some deep-rooted crops such as cucumbers, tomatoes and fruit trees should be applied to the ditch or hole application, before application can be diluted to a certain number of fertilization, evenly distributed to the previously dug wells or holes, and then poured a small amount of water.
It is necessary to pay special attention to the fact that there are several kinds of fertilizers that cannot be mixed and flushed. Otherwise, the effect will be reduced or even no effect. For example, ammonium bicarbonate cannot be mixed with strong acidic fertilizers, and amino acid fertilizers cannot be mixed with humic acid fertilizers. Phosphoric acid fertilizers and Zn, Mn, Fe, Cu and other fertilizers should be mixed with chelating agents.
Reliable fertilization -
Special environment sees odd effects
Fertilization has the characteristics of simple operation and rapid fertilizer efficiency, so it is generally used as topdressing in the growing season of crops, and it is mainly applied to some economic crops such as various vegetables, fruit trees, etc., with long or large results. At this time, if ordinary fertilizers are used, nutrient release and conversion will be slow and fertilizer efficiency will be slow, which will inevitably affect the yield and quality. Especially in the winter greenhouse cultivation crops, because of the disadvantageous conditions such as low temperature, lack of sunshine, etc., choose a reliable application of fertilization, the effect is good.
Responsible for science -
According to local conditions, nutrition
Fertilization should be applied scientifically and in small quantities. Such as leeks, each cut can be applied once, cucumber, eggplant, pepper and other solanaceous fruit can be applied every time a flush, in each flushing with a reasonable number of elements, trace elements and plant root growth promoters, etc. .
The types of fertilization should be determined according to the soil fertility in the planting area, the amount of base fertilizer and the characteristics of the crop's fertilizer requirements. Then, read the specific period, application amount, and application method of the fertilization in detail, and refer to the product descriptions of the purchased products. Do not rely on traditional experience to make your own claims.
Can fertilization completely replace compound fertilizer?
Fertilization and fertilization are also called water fertilization. That is, the method of dissolving solid, quick-acting fertilizers in water and fertilizing them with water is the best fit for the principle of scientific fertilization. Nutrients can be absorbed by crops through mass flow and dispersion, and can also be prevented. Spread the sprouts made of fertilizer. From the point of view of fertilizer, fertigation applied fertilizer to crops and poured water. In practice, it is the application of water and fertilizer integration technology.
Then, with the development and promotion of fertilizer technology, can fertigation completely replace compound fertilizer?
Experts said that fertigation is now widely used in greenhouses and open-field vegetable production, mainly in the period of vigorous vegetable growth, such as fruit vegetables if the full fruit period, after each fruit picking, cabbage cabbage, etc., effective Good effect. However, with the development of slow-release fertilizer technology, the utilization rate of compound fertilizer has been greatly improved, and nutrients can be evenly released during the entire crop growth period. Although it can not be said whether red fertilization can completely replace compound fertiliser, fertilization and fertilization commodities are gradually becoming the sought-after vocabularies of dealers and farmers. Many domestic fertilizing companies are gradually creating their own brands, and fertigation will enter new ones. Expansion phase.
Nucleic Acid (DNA/RNA) Extraction Kit
1. Introduction
The total viral nucleic acid extraction kit is suitable for extracting total viral nucleic acid from serum, plasma, tissue homogenate and other samples. The kit is based on silica column purification technology, which eliminates the need for toxic phenol-chloroform extraction and time-consuming alcohol precipitation. This product has successfully extracted nucleic acids from hepatitis B A/C, hepatitis C, and norovirus standard. The obtained DNA/RNA can be directly used in a series of downstream experiments such as PCR, RT-PCR, and LAMP.
Notice:
1. The carrier RNA solid must be dissolved in Nuclease Free Water to 1µg/µl before use, and vortex to dissolve. Store in aliquots at -70°C. If you need to store it at -20℃ for a long time, please repackage it according to the number of times of use.
2. Dissolve Proteinase K (20mg/ml): Add Proteinase Dissolve Buffer to dissolve Proteinase K to a final concentration of 20mg/ml. Proteinase K dry powder can be stored at 2-8°C for one year, but dissolved Proteinase K must be stored in aliquots at -20°C. Repeated freezing and thawing of Proteinase K can affect its activity.
3. Buffer VHB must be diluted with 14 ml absolute ethanol before use and stored at room temperature.
4. Buffer RW2 must be diluted with 80 ml of absolute ethanol before use and stored at room temperature.
3. Shelf life
Except for Proteinase K and Carrier RNA, other components of this product can be stored at room temperature (15-25°C) for 12 months, and should be stored at 2-8°C for long-term storage. Proteinase K and Carrier RNA dry powder are transported at room temperature. Please store at -20°C after receiving the test product, and store at -20°C after dissolving.
Nucleic Acid Extraction Reagent Kit,Nucleic Acid Extraction Kit,Covid-19 Nucleic Acid Extraction Reagents,Nucleic Acid Test Kits
Jilin Sinoscience Technology Co. LTD , https://www.jilinsinoscience.com