Cause: if the nocturnal tuber is in the environment of water accumulation for a long time, it will be lack of oxygen, which will cause the leaves to turn yellow; if the basin soil is in the state of water shortage for a long time, the leaves will also turn yellow.
Solution: at ordinary times, the amount of water should be well controlled, and the basin soil should be kept wet. There should be no excess water in the basin soil, and the soil should not be hardened. If the amount of water is large, loosen the soil properly and put it in a ventilated place for maintenance.
Reason: if it grows in a place without light, it will grow badly and its leaves will turn yellow.
Solution: when curing, it needs to be exposed to sunlight, especially in winter, and try to be exposed to all day light. Usually put in the light, but in the summer when the sun is very strong, we need to do a good job of shading, do not be exposed to the sun.
Reason: if the usual amount of fertilizer is too large, it is easy to cause fertilizer damage, the root system of the plant will be burned, and the leaves will turn yellow; if there is a long-term lack of fertilizer, the leaves will turn yellow because they cannot absorb nutrients.
Solution: control the amount and frequency of fertilizer application. It is better to apply fertilizer every 15-20 days during the vigorous growth period, and the frequency should not be too high. If the amount of fertilizer is large, pour more water or sow some vegetable seeds, pull out the seedlings after the same length, you can consume the extra fertilizer in the pot soil
