We raise flowers at home is the most likely to appear a kind of yellow leaf is iron deficiency yellow leaf, it is manifested as the leaf vein is green, other locations yellow, this situation occurs after many flower friends will suggest that you supplement ferrous sulfate, it can be quickly improved, so to speak is right, but ferrous sulfate in the family is easy to have problems, such as our pot soil is seriously alkaline, directly the ferrous sulfate with hydration into the soil, the soil is alkaline ferrous sulfate poured into the soil can not be quickly absorbed, It will be completely oxidized to brown in one to two minutes, and eventually it will attach to the root system in the soil, which will cause the soil to appear compacted, so that it will only get worse and worse, and it will not be able to play a role in being absorbed and improved by him.
So ferrous sulfate is generally used in the field, it can be washed with water to penetrate into the soil, even after oxidation can also be with the rain continuous erosion infiltration to all directions, it will not be attached to the root system at all, it remains in the soil for a relatively short time, if it is used in pots, it must be used reasonably, we want to use it, first go to find a gram of ferrous sulfate, and then add a kilogram of water, and then add one to two grams of vinegar, the rice vinegar common in our home is the best, it is acidic, After direct hydration, ferrous sulfate will not oxidize in a short period of time for one to two hours, as long as the water has been acidic, we will be watered into the soil after the watering, the soil will also be changed to acidic, it can continue to supplement iron for plants in the soil, and can be quickly absorbed by plants, and then it can play a role in replenishment.
Ferrous sulfate do not use frequently, its concentration is relatively high, it is generally recommended that you go to it once a month, if it is not very acidic, you can supplement it once every two months, as long as you can ensure that the soil is acidic, ferrous sulfate can be absorbed by plants for a long time, remember to use ferrous sulfate do not spray leaves to plants, because it is easy to oxidize on the leaves of the leaves to burn leaves, because the leaves of the plant are not able to absorb ferrous sulfate, Its pores are oxidized after they open, which will only clog the pores, resulting in scorched leaves in the plant.
Since ferrous sulfate is so unusable and prone to problems, can we find something else to replace it? Of course, our common plants like acid, but the requirements are good growth in acidic soil, iron in acidic soil can be absorbed, we plant flowers with the soil is iron, so there is no need for a long time to supplement, but the soil alkaline after the iron element can not be absorbed by plants, so we only need to regularly water once a month acidic water, our common rice vinegar can be, watering according to the concentration of 1: 1000 into the soil, Half a month or once a month to water the acidic water, he can normally absorb the iron in the soil, so that the leaves can be oil green.
If you have been watering rice vinegar, the soil is acidic, we found that the iron in the soil is missing, we can change the iron supplement, you can use chelated iron, chelated iron is a kind of organic iron, you pour into the soil for a year or two it will survive in it, will not oxidize, so that you can continue to replenish the plant, chelated iron You can supplement once a month or two months, you can ensure that iron is not missing, for plants that like iron, fortune trees, Milan, gardenias and the like can be used.
This is the simplest way for us to ensure that there will be no iron deficiency yellow leaves, if you do not want to use vinegar, you can buy some wood vinegar, you can also adjust the soil, or citric acid can be, we can also ferment at home, orange peel, lemon peel fermentation good solution It is also acidic, but also can improve the pH of the soil, you can try it.