Lemon trees always have yellow leaves falling off and curly leaves. What's going on here?

The following information comes from the Flower Friends Dialogue of Uncle Flower Friends Group in February, 2020 14. Thanks for sharing, the dialogue begins: national wind: the lemon trees planted always do this, with yellow leaves falling off and curly leaves. No shortage of water. What's the problem? Ask the memory of the end of summer: @ jingjingjingjingjingjingjingjing, are you from Hebei? How long has this lemon tree been raised? What's the room temperature at night recently? How to water it? Do leaves droop first and then fall off naturally? Look at the photos. There is plenty of light during the day. Have you seen the whole photo ~ Guofeng: @ 19 This is the whole photo two months ago @ 1, that is, in the middle of 65438+February last year, did you go to the basin by yourself? What kind of soil do you use? This pot with a big belly looks like a jar. There are several drainage holes at the bottom. What is the aperture? How about the watering method? Is the temperature the same day and night? Guofeng: The seller changed it for me. The soil used for soil is not clear. There is a hole at the bottom. The method of watering is to water less every day and keep the soil moist. It looks like breathable sand. The aperture is less than two centimeters. Use suitable soil. Sandy loam and acid soil should be used for lemon. Your leaves are not yellow due to iron deficiency. The drainage holes are too small and too few, and the pot depth is easy to cause poor drainage and poor air permeability. Water accumulation will naturally lead to root retting and poor breathing. The performance reflected in the leaves is to turn yellow, wither and then fall off. This is a warning from plants, especially if you water them often. Potted woody plants should follow the method of drying the soil up and down first and then watering it thoroughly. The purpose is to ensure that the root system has a dry-wet cycle growth process, preferably. Guofeng: @ 12398 I saw it this time. Thank you, but you said there were few holes in the bottom. Do you need to change the basin again? Memories at the end of summer: @ Guofeng is especially suitable for dry maintenance in winter. Winter in the north is not the growing season for lemons. Some leaves are asleep, and no new branches and leaves sprout, right? So what you have to do now is to stop watering, clean up the fallen leaves on the topsoil, loosen the topsoil, strengthen the light, and let the basin soil dry as soon as possible. It needs maintenance in winter and is not ventilated in summer. It's good enough to stay in the present state. National wind: There are new leaves and flowers. When the lemon is ripe, you will look good hanging on the branches, but it will consume the nutrition of the mother.

I suggest you change pots in spring. The larger the optimal pore size of the pelvic floor, the better. You can also use this basin, drill more diamond holes, or replace it with other basins, such as gallon basin and Qingshan basin. ~ This is my lemon, and I use the green mountain basin ~ @ jingjingjingjingjingjingjingjingjing20.

You can also change it to a 4-gallon basin or a No.5 Qingshan basin. It's best to bring the original soil for the basin [national wind]: I think [@wxd]:@ 123 [memories of late summer]: @wxd will not leak soil. There is no soil leakage at the bottom of the three pots [wxd]:@ 12 seems to be no leakage. The conversation is over.