Matters needing attention in rehydration of edible fungi, five causes of yellow leaves of flowers and their remedies

According to the characteristics of the emergence of yellow leaves in flowers, there are the following situations:

First, the water is yellow. Due to excessive watering, it is characterized by no obvious change in the old leaves and yellowing of the young leaves, which should be controlled immediately.

The second is drought and yellow. Due to water shortage and drought, it is characterized by the yellow of the old leaves from the bottom up. If the water shortage time is a little longer, the whole plant will be yellow, or even die, so it should be watered in time.

The third is fat yellow. Caused by excessive fertilization or excessive concentration; characterized by thick, shiny and uneven young leaves; fertilizer, ploughing and watering should be controlled

Fourth, hungry yellow. It is caused by insufficient fertilizer, low fertilization concentration, and long interval of fertilization; it is characterized by yellow young leaves and tender stems. If you do not apply fertilizer in time after seeing this scene, it will also cause yellow leaves and even death of the whole plant. For flowers that lack fertilizer, do not apply thick fertilizer in large quantities at one time, so as not to cause root burning.

Fifth, iron deficiency yellow leaves. Because of the great change of soil fertility conditions, yellow leaves often emerge in the greenhouse, which is characterized by young leaves, light old leaves, yellow mesophyll, green veins and a typical network, which can be solved by using ferrous sulfate solution. the method is as follows: 7 parts of cake fertilizer, 5 parts of ferrous sulfate and 200 parts of water.