1. Water shortage: long-term non-watering pot soil too dry, or to the orchid watering is not regular, orchids will appear symptoms of water shortage.The main manifestation is that the leaves shrink and the whole plant looks wilting; The reed head is shriveled and yellow; Old leaves begin to turn yellow and dry from the tip, and new leaves are not green and dull.
2. Lack of fertilizer: pot soil is too poor or long-term fertilization to the plant, orchids will appear symptoms of malnutrition.The main performance is that the plant is thin and weak, the growth speed becomes slow and there is no new bud and new leaf; Old leaves are gradually yellowing from the base, and new leaves are dull.Plants will show different symptoms depending on the nutrients they lack.For example, in the absence of nitrogen fertilizer, the new leaves of the plant grow poorly and are thinner than the old leaves; When phosphorus deficiency occurs, the growth of leaf buds is slow and the edge of leaves is slightly curved.When magnesium deficiency occurs, the leaves will appear yellow leaves and so on.
1. Replenish water: If be lack of water, cause plant wilt, need to replenish water in time only, orchid can restore.Then in the subsequent maintenance, when the pot soil becomes dry, it needs to be watered thoroughly to replenish water for the plant.
2. Fertilizer: If the soil is too poor for a long time without replacing the potting soil, it is necessary to replace the flower soil in time for re-planting.The pot soil can be replaced once a year as far as possible.If the plant has not been fertilized for a long time, it only needs to supplement nutrients in time.Corresponding fertilizers can be applied to the plants according to different symptoms of the plants.If it is caused by lack of nitrogen fertilizer, it can be improved by applying urea once every three days; Lack of phosphorus fertilizer can be caused by the use of potassium phosphate solution irrigation roots or directly sprayed on the leaf surface, once every three days, three times will be improved.If magnesium fertilizer is deficient, 0.5% magnesium sulfate solution can be sprayed on the leaves every three days, and it can be improved about three times.
