Watermelon germination management
The watermelon seeds swell with water, germinate and germinate, the seedlings unearth, the seed coat falls off, the cotyledons unfold, and the first true leaf reveals (two leaves and one heart) as the germination stage. The germination of watermelon seeds must first absorb water, so that the seeds change from the dormant state to the germinated state. When the water absorption reaches 65% to 75% of the dry seed weight, the protoplasts of the stored substances in the seeds begin to change from gel to sol state From the polymer state such as starch, protein, fat, etc., it can be converted into simple molecules, amino acids, fatty acids and other small molecules that can be absorbed easily, providing energy for the emergence of seed buds. In this process, if the water supply is too low, it can not meet the needs of the physiological activities of the seeds, can not germinate normally, or even "sprout" phenomenon; too much water supply will make the seeds reach a supersaturated state, the permeability of the seed coat is poor, affecting the oxygen supply, Easy to cause rotten species. Watermelon mainly consumes the nutrients stored in the seeds during the germination period, so the absolute weight (fullness) of the seeds and the storage life of the seeds have an important influence on the germination rate and the quality of the young shoots. The viability of watermelon seeds decreases with the increase of the storage period of the seeds. Although the service life of the seeds reaches 5 to 7 years, the seed germination rate is high and the germination potential is neat in 1 to 3 years. The length of the watermelon germination period mainly depends on the ground temperature: the ground temperature is high and the germination is rapid, and the ground temperature is low and the germination is slow. The ground temperature is between 15 and 20 ° C, and the germination period takes 7 to 13 days; when the ground temperature is 25 to 30 ° C, the seedling can emerge in 3 to 4 days. In the early spring and low temperature season, when watermelon seedlings are raised, listen to and watch the weather forecast to ensure that there are 6-7 consecutive sunny days after sowing, and tighten the greenhouse film to heat up; when encountering cold weather, rain, snow, haze and other bad weather, fire roads and grounds should be used Heating equipment such as hotlines and hot air stoves increase the ground temperature to avoid affecting the emergence due to long-term low temperature and high humidity. Disclaimer: Some articles of this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for processing. phone
The medical protective shoe cover includes a coat, an inner bladder, a strap, a velcro surface, a non-slip bottom, and a velcro female surface. There is a sock-shaped inner liner that can be removed, and the anti-slip bottom is preferably provided with an anti-slip corrugated beef tendon bottom on the bottom surface; one side of the end of the strap is provided with a hook-and-loop fastener surface, and the other side is provided with a hook-and-loop fastener surface matching the hook and loop surface; the jacket Waterproof material is preferred, and elastic fabric is preferred for the inner liner; the jacket of the utility model is made of waterproof plastic material, and the anti-slip bottom surface adopts beef tendon bottom, which is strong and durable; The utility model can be reused after cleaning and disinfection, and can be used continuously after the inner tank is cleaned and disinfected; the arrangement of the straps enables the utility model to have the protection performance exceeding that of high-top shoe covers, but it is as convenient to wear as low-top shoe covers.
Scope of application: used by medical personnel in medical institutions to prevent contact with potentially infectious patients' blood and body fluids, and play a barrier and protection role
Instructions:
Before use, unfold the isolation shoe cover, put on the shoe cover, put the socks and trousers into the isolation shoe cover, and fix it with straps. Through the actual operation of many people, it has been verified that Dongbei disposable non-woven isolation shoe covers are wear-resistant, waterproof, breathable, good isolation, and high-tube shoe covers do not slide down in one-time use.
Features
The product uses non-woven fabric or polyethylene film as the main raw material, which is cut, sewn into or thermosynthesized.
Sufficient strength and barrier properties, provided non-sterile
Product Description;
This product is made of plastic film or non-woven fabric and rubber band by hot pressing. The biggest feature is that it is easy to use, and has a wide range of applications. Different materials have different corresponding functions, such as anti-skid, anti-static and dust-proof. Moreover, the price is much cheaper than the non-disposable shoe covers, and the handling is also convenient, especially the non-woven shoe covers, which can be naturally degraded.
Scope of application:
It is generally used by medical staff, hygienic, clean places, and laboratories.
[Precautions]
1) This product is for one-time use only and will be destroyed after use.
2) This product should be stored in a well-ventilated and clean environment away from fire sources, with a relative humidity of not more than 80%, no corrosive gas, and good ventilation.
Medical Isolation Shoe Covers,Isolation Shoe Boot Covers,Non Slip Shoe Boot Cover,Medical Isolation Shoe Boot Covers Jilin Sinoscience Technology Co. LTD , https://www.jlgkscience.com