What should I do if lily bulbs become soft? What should I do if the potted Lagerstroemia indica leaves fall off?

The following information comes from the conversation between uncle flower shop and flower shop group. Ugly Bear: Excuse me, why does the stem of my lily bulb feel soft? It was planted hard before, and the whole stem hung down. Shi Xie: I haven't woken up yet. Ugly Bear: What should I do? Will I die? [A7]: Your soil is not good. It's too sticky and watertight. Change it to breathable and permeable. Looks like he's dying. Shi Xie: It sucks. If the whole piece is soft, it's hopeless. If a part is soft, dig out the soft part until it reaches the position of fresh meat, and then apply carbendazim dry powder. A7: Replace with nutrient soil. [Jiao Jinhu]: Teacher Shi is going to trouble you again. Please see how this pot of crape myrtle became like this. There are basically no leaves. I cut it off. [Shi Yi]: 1. Reasons: Long-term watering will cause too much water, so that the roots can't breathe after being soaked in too much water for a long time, and the roots begin to rot and then wither; But you can't water it for a long time, otherwise it will lack nutrition and wither. 2. Solution: If the rotten roots are caused by excessive watering, cut off the rotten roots and then reduce the amount of watering. You can water the soil according to its dryness and wetness. If it is caused by water shortage, it is necessary to increase the amount of water in time, but it cannot be poured thoroughly at one time. Water should be supplied slowly. Lagerstroemia indica can resist drought and avoid waterlogging. Water it once a year before budding in spring and freeze it once after defoliation in autumn. At other times, pay attention to "no watering, no doing". Water in spring drought 1-3 times; Drainage should be done well in rainy season to avoid root rot caused by accumulated water; There is generally no need to water in autumn. 1. illumination: the growth of Lagerstroemia speciosa needs sufficient illumination, otherwise there will be few or no flowers at flowering stage, and the whole plant will grow weak or even worse. 2. Temperature: The grown Lagerstroemia indica plants have strong cold resistance, but the cold protection and heat preservation of seedlings must be done well. Culture for more than three years, keep the temperature and stop. Three. Fertilization: About the same as watering time. Fertilize once before germination in spring and once after defoliation in autumn. It can be smeared with human excrement or sesame paste residue, which can promote plants to grow more vigorously in the coming year, and the flowering period is more lush and bright. Shi Yi: You will gradually gain experience in maintenance management. [Jiao Jinhu]: What caused this? Please give me some advice. Shi Yi: The ambient temperature and humidity can't reach. [Jiao Jinhu]: Teacher Shi, can we change the big basin now? If it can be changed, how to do it? Thank you. Just buy nutrient soil, okay? Stone art: soil: it is best to use deep and fertile sand; Watering: water for drought and waterlogging 1-3 times in spring drought, and don't do it at other times; Lighting: keep sufficient lighting; Temperature: the cold protection and heat preservation of seedlings must be done well, and the heat preservation can be stopped for more than three years; Fertilization: Fertilize once before germination in spring and once after defoliation in autumn. In terms of soil, Lagerstroemia indica has strong adaptability to the environment and can be applied to general cultivated soil. If conditions permit, deep and fertile sandy soil can be used for cultivation, which is most beneficial to the growth of Lagerstroemia indica. [Shi Yi]: The temperature of pan changing should be below 25℃. Shi Yi: Peat soil is thickened with sand and garden soil, or peat soil and humus soil are thickened with sand and perlite. Thanks for the dialogue between Shi Yi, Jiao Jinhu, Ugly Bear and Ah Qi.