Recently, during the visit to the countryside, agricultural technicians from the Liangjiadian regional station in Yutian County discovered that a large area of ​​dead seedlings occurred in the tomato sheds in Wangcun, a grid house in the area. It was understood that the analysis was due to excessive fertilizer application. harm.

The fertilizer damage is due to the relatively closed environment of the protected land, and the ammonia, nitrous acid and other gases produced by the fertilizer cannot be diffused outwards; or due to the long-term use of certain fertilizers, such as raw chicken manure and compound fertilizers, which have high nitrogen content. Fertilizers, but also the lack of rain and a lot of irrigation leaching, resulting in a large number of these fertilizers accumulated in the soil, easily lead to physiological barriers of vegetables. Mainly manifested as poor root development, less new roots and brown roots. Therefore, in the cold and even overcast days, care should be taken to avoid the use of raw chicken manure, fertilizer and other fertilizers, can be applied bio-organic fertilizer to strengthen the root system maintenance. In addition, when it is necessary to top-dress the vegetables during the latter part of the growing season, you can choose to catch up in the morning with good weather, and catch a small breeze after dressing.

In case of fertilizer damage, timely remedial measures must be taken: First, loosen soil and strengthen ventilation so that harmful gases can be emitted to the shed as soon as possible, and appropriate winds should be released even on cloudy days, released sooner or later, placed at noon, or placed at low temperatures. Put it at high temperatures. The second is to spray plant growth regulators such as cytokinin and love more to promote the recovery of the affected vegetables as soon as possible. Third, try to avoid the application of unrefined chicken manure or fertilizers with high nitrogen content before closing the shed for a long time.

Automatic Nucleic Acid Extractor

Nucleic acid extraction instrument is an instrument that automatically completes the nucleic acid extraction of samples by applying the supporting nucleic acid extraction reagents. Widely used in disease control centers, clinical disease diagnosis, blood transfusion safety, forensic identification, environmental microbial testing, food safety testing, animal husbandry and molecular biology research and other fields.
Using magnetic beads as the carrier, using the principle that magnetic beads adsorb nucleic acid under high salt and low pH value, and separate from nucleic acid under low salt and high pH value, and then move the magnetic beads or transfer the liquid to realize the entire extraction and purification process of nucleic acid. Due to the uniqueness of its principle, it can be designed into a variety of throughputs, which can be extracted from a single tube or 8-96 samples, and its operation is simple and fast. It only takes 30-45 minutes to extract 96 samples, which greatly improves the The experimental efficiency is low and the cost is low, so it can be used in different laboratories, and it is the mainstream instrument on the market.

Features of Magnetic Bead Nucleic Acid Extractor
1. Enables automated, high-throughput operations.
2. Simple and fast operation.
3. Safety and environmental protection.
4. High purity and high yield.
5. No pollution and stable results.
6. Low cost and easy to be widely used.
7. Different types of samples can be processed simultaneously.

Nucleic Acid Extraction System,Automatic Nucleic Acid Extractor,Nucleic Acid Extraction Machine,Nucleic Acid Extraction Instrument

Jilin Sinoscience Technology Co. LTD , https://www.jilinsinoscience.com