Summary of cultivation "Selection of culture soil" Yezihua is not strict with soil, but it is afraid of water accumulation and is not tolerant of waterlogging. Therefore, we should choose loose and well-drained culture soil. Generally, 4 parts of humus soil, 4 parts of garden soil and 2 parts of sand can be used as culture soil, or dry pond mud mixed with some coal cake residue can be used as basin soil. In order to make leafy flowers bloom more, "rational fertilization" must ensure sufficient nutrients, and at the same time, timely and appropriate fertilization and rational use should be carried out. Generally, bougainvillea grows vigorously from April to July, and liquid fertilizer is applied once every 7 days to 10 days to promote plant growth and health. The fertilizer can be 10%-20% decomposed bean cake, rapeseed cake water or human excrement water. In August, in order to promote flower bud germination, phosphate fertilizer was applied once every 10 day, and 20% liquid fertilizers such as decomposed chicken, duck and pigeon manure and fish offal could be used. The flowering period starts from June 5438+ 10, and from this period to mid-June 5438+065438+ 10, phosphate fertilizer is applied every half month, and the concentration of fertilizer and water is 30% ~ 40%. In the future, topdressing should be done once after each flowering, so that leafy flowers can continuously supplement nutrients during flowering. "Water should be controlled before flowering." The principle of "Don't do it, don't water it, but water it thoroughly" should be mastered in the usual watering of leaves and flowers. However, in order to keep Yuzryha bloom tidy and lush, it is necessary to control the water before flowering. The watering of bougainvillea has been controlled since September, and each watering should wait until the basin soil is dry and the branches and leaves are soft and drooping. This is repeated for half a month, and normal watering is resumed after half a month. Do not apply fertilizer during water control, so as not to burn the roots with fertilizer. In this way, in a month or so, leafy flowers can germinate and bloom, and the flowers are open and tidy, thriving. Because of long-term watering, fertilization and rain erosion, the pot soil is easy to harden. Therefore, it is necessary to loosen the soil regularly and remove weeds in the pot soil at the same time, which is beneficial to the growth of leaves and flowers. Otherwise, the basin soil will harden and accumulate water, which will easily lead to root rot or poor growth of Phyllanthus urinaria. In addition, bougainvillea grows rapidly, with developed roots and many fibrous roots, so it is necessary to change pots once a year. "Proper pruning" means that bougainvillea grows rapidly, and attention should be paid to shaping and pruning during the growth period to promote the growth of lateral branches and bloom more. Pruning times are generally 1 to 3 times, which should not be too much, otherwise it will affect the flowering times. After each flowering, the residual flowers should be removed in time to reduce nutrient consumption. After the flowering period, the over-dense branches, inner branches, long branches and weak branches are thinned, and other branches are not pruned or only slightly pruned, so as to shorten the next growth period and promote their early flowering and more flowering. Bougainvillea "Pay attention to light and ventilation"