First, the soil hardens.
Pterocarya microphylla has a well-developed root system, and the requirements for soil are not too high, which requires fertile soil for ground planting. As a bonsai culture, it has higher requirements for soil. In the process of reproduction, watering and fertilizing are easy to cause soil hardening, and the hardened soil has poor air permeability, so the roots can't breathe enough oxygen in it, the normal life activities of the roots are weakened, water and nutrients can't be transported to plants, the ground growth is blocked, and new buds can't germinate, so leaves don't grow.
Solution: If the basin soil is hardened after watering, it is suggested to hug it with a small iron rake to improve the permeability of the soil and restore the vitality of the root system. If the soil planted is poor in permeability, I suggest changing pots and soil for plants to provide a comfortable growth environment for roots.
Soil planting: the soil range of ground planted Pterocarya stenoptera is wide, but when it is used as a bonsai cultivation, the pot soil should be loose and breathable with good drainage performance. It is suggested to use garden soil, river sand, peat soil and decomposed organic fertilizer in a ratio of 4: 3: 2: 1. During the curing process, loosen the soil in time after watering to prevent the soil from hardening. The root system of Pterocarya microphylla grows vigorously in a comfortable soil environment, and the aboveground part grows vigorously and has strong germination ability, so that new leaves will grow.
Second, the temperature is too low.
Pterocarya stenoptera is a tropical plant, which is native to tropical and subtropical virgin forests. Therefore, there are thermophilic growth genes in the plant, and it grows vigorously in the environment of 20 ~ 30 degrees. When the temperature is below 3 degrees, the growth of plants is blocked and there will be no leaves. If the temperature stays below zero, plants will freeze to death.
Solution: If the potted plants are kept in an environment below 3 degrees, the low temperature will prevent the plants from sprouting new buds. At this time, provide a warm growth environment for plants to promote their germination and long leaves.
Temperature scheme: the hometown of lobular rosewood is in tropical and subtropical areas, so its warm-keeping habits should be considered when maintaining it. Many southern flower lovers don't have to worry about the adverse effects of temperature on plants when maintaining. Flower friends in the north of the Yangtze River basin should pay attention. Because the winter temperature in the north is low, like that in the northeast, it takes a long time, so when the temperature drops below 10 degrees before winter, it should be moved to a warm place for maintenance to prevent the growth of plants from being blocked, so that new leaves can grow in winter.
Third, lack of sunshine.
Pterocarya microphylla has a high demand for light and likes to bathe in the sun. However, when many people are breeding, they generally like to put them in places with insufficient sunshine such as study and bedroom. Without sufficient light, the photosynthesis of plants will be blocked, the leaves will turn yellow, it is not easy to sprout new buds, and naturally no leaves will grow.
Solution: If your lobular rosewood bonsai is maintained in a place with insufficient indoor light, it is recommended to move it to a place with bright light to promote photosynthesis, produce nutrients and promote plant germination and leaf growth.
Lighting scheme: Young Ye Feng Yang Xiguang should be placed on a sunny balcony or windowsill as far as possible when breeding, and sufficient lighting can promote the germination and growth of plants. Giving plants more sunshine in spring, autumn and winter is beneficial to plant germination and growth, but in summer, the light is strong, so it is necessary to avoid direct light and prevent the leaves from being burned by strong light.
Fourth, dry environment.
Pterocarya stenoptera is not drought-tolerant and needs a lot of water during its growing period, but many flower friends always forget to water the plants because they are busy. Insufficient water in the soil will hinder the germination and leaf growth of plants. Sometimes it doesn't rain for a long time, or the air in the heating room is dry in winter. Lack of water will cause the branches and leaves to dry up, which will hinder life activities and make the leaves unable to grow.
Solution: If the weather is dry and the water is not replenished in time, the lobular rosewood may be short of water. I suggest spraying water around the plants with a watering can first to improve the air humidity. If the soil is dry, water it.
Watering scheme: the growth of lobular rosewood will consume a lot of water, and it is better to water it once every 2 ~ 3 days. Pay attention to avoid noon when watering and spraying water in summer, because the temperature is high at noon, the water will evaporate quickly, burn the roots and sunburn the leaves, so it is best to replenish water to the plants in the morning and evening in summer. Water at noon in winter to prevent plants from freezing. It is unscientific to water lobular rosewood only at intervals of days, but also depends on the pot soil. When the surface of the basin soil turns white, water it thoroughly, not half. If the flowerpot is too big, water it several times until the water flows out of the drain hole at the bottom of the pot.
Overview: Pterocarya microphylla is a precious plant. Now many flower lovers who love bonsai will cultivate one. But improper management is prone to problems. The above four reasons will generally lead to plants not growing leaves. Flower lovers can refer to the factors in the article to treat Pterocarya microphylla and promote its germination and long leaves.