What are the topdressing techniques in the late growth stage of edible fungi?

Without nutrient sources, everything can't grow, and the nutrition provided by nutrient sources is fertilizer, and edible fungi are no exception. Although edible fungi belong to microorganisms, their growth must have carbon and nitrogen sources. What are carbon and nitrogen sources? Simple understanding, it can be said that it is the source of fertilizer and nutrition. Therefore, the cultivation of edible fungi should also be fertilized, but according to the existing state and growth characteristics, fertilization methods are different.

First, add fertilizer.

Mixing fertilizer means adding fertilizer when the culture material is stirred, usually adding urea or potassium dihydrogen phosphate at this time. Fermented dried chicken manure or dried cow dung can also be added. These fertilizers play a rapid role in the growth period of fungi, making up for the lack of nutrition when other culture materials are slowly decomposed, and can supply nutrition immediately when the mycelium of the strain recovers, so that fungi grow rapidly and vigorously.

2. Soak and fertilize.

After several times of fruiting, the culture material is in a state of lack of nutrition, and the growers do not want to give up the mushroom sticks immediately, so they must supplement the nutrition for the mushroom bags. The method is to make urea or potassium dihydrogen phosphate into an aqueous solution, put it in a container large enough, and then put the mushroom sticks without plastic bags into the liquid. Generally, after soaking for 2-3 days, take it out and put it back to the mushroom growing place, and adjust the temperature, humidity, light and oxygen content of the place to keep it growing. The quality of edible fungi produced after soaking is not as good as before, and it is not used in advance under normal circumstances.

3. Injection fertilization.

In this method, a professional water replenishing tool, namely a water replenishing needle, is inserted into a nutrient deficient bacterial stick, and the needle is connected with a high-pressure pump. Through the operation of the pump body, high pressure is generated, and the fertilizer solution is injected into the bacteria stick to supplement nutrition and water for the bacteria stick. Injection method is generally combined with hydration application.

4. Spray fertilization.

This method is generally aimed at edible fungi varieties cultivated by covering soil, such as Coprinus comatus and Agaricus bisporus. The method is to put the fertilizer solution into a sprayer and spray it on the covering layer. It is similar to spraying foliar fertilizer on fruit trees, except that one is sprayed on the tree body and the other is sprayed on the ground.

Among these fertilization methods, only mixed fertilization is widely used, and other methods are generally not used, because there will be a shortage of fertilizer and water under special circumstances. As long as the carbon-nitrogen ratio of the culture material is carefully calculated, the culture material is of good quality and sufficient quantity, there will be no shortage of fertilizer.