It is native to Brazil, South America and Central America. It likes warm, humid and semi shade environment. We in the process of breeding double line taro, more or less will encounter the situation of yellow and dry leaves, how to do? Let's analyze the reason with Xiaobian.
1、 First understand its growth habits
Double line bamboo taro likes warm and humid environment with bright light. It is not resistant to cold and drought, and is afraid of exposure to the sun. It should be watered sufficiently during the growing period to keep it moist. However, the soil should not be waterlogged. It is better to use slightly acidic soil with loose and fertile soil, good drainage and air permeability and rich humus. Because the plant is shade resistant, it is suitable for decoration, beautification and greening of family rooms. It can be placed in a brighter room for a long time. If it is placed in a dark room for 4-6 weeks, it has no great influence on its growth. Therefore, it can be placed in a dark room for a long time and can grow well.
2、 Causes of yellowing and withering of leaves
1. Water yellow: the young leaves are dark yellow and lusterless, the old leaves have no obvious changes, the branches are small yellow green, and the new shoots are not long, which indicates that the water is too much. Put the flowers out of the basin and put them back into the basin after they are ventilated, cool and self blown.
2. Drought yellow: the yellow with water shortage is different from that with more water. The yellow of water shortage is that the tip or edge of leaves are withered and dried, and the old leaves are withered and yellow from bottom to top, but the growth of new leaves is relatively normal. Pay attention to watering enough and thoroughly.
3. Burning yellow: strong sunlight directly on some shade loving flowers, easy to cause the flower leaf tip, leaf edge Hair wither, the leaf Chaoyang part appears the yellow spot. Move to the Yin.
4. Lack of light yellow: leaves can't get enough sunlight and form chlorophyll when they are placed in shade for a long time. The whole plant leaves turn yellow and then fall off. Supplementary light can avoid this disease.
5. Fertilizer yellow: excessive fertilization or concentration will also cause yellow leaves, performance in the new leaf tip appears dry brown, generally thick and dull, and concave convex is not extended, old leaves are burnt yellow and fall off. Fertilizer application should be stopped immediately and some fertilizer should be washed with a large amount of washing.
6. Lack of fertilizer yellow: the color of young leaves becomes light, yellow or light green, while the old leaves are more normal or gradually turn from green to yellow. Check the basin soil, if there is drying phenomenon, soil should be replaced, usually thin fertilizer frequently applied.
7. Diseases and insect pests: double line bamboo taro has strong resistance and fewer diseases and insect pests, but in the process of cultivation, there are still diseases and insect pests and yellow leaves. For example, scale insects can occur on the edge or back of leaves, and sometimes on the surface of leaves. In light, the leaves turn yellow and aging, and affect the growth of plants. In severe cases, dead leaves and fallen leaves appear until the whole plant dies. At the same time, the wounds invaded by scale insects are easy to be infected with virus.