Culture method of Amorphophallus sinensis

Purple-backed bamboo taro, also known as red-backed crouching bamboo taro, red-backed bamboo taro, red-backed kudzu, etc., belongs to the perennial herb of the family Amorphophallus. It has beautiful plant type, colorful leaves and strong negative tolerance. It is often used for indoor potted viewing. Large varieties can be used to decorate the halls of hotels and shopping malls, while small varieties can decorate balconies, living rooms, bedrooms and so on. Next, let's take a look at the culture method of purple back taro.

Growth habits of Amorphophallus sinensis

Purple back taro is native to Central America and Brazil, and is cultivated in various provinces in the south of China. Like warm, humid, shady environment. The suitable temperature for growth is 20-30 ℃, which needs more water and is not resistant to drought. More heat-resistant, slightly cold-resistant, more than 5 ℃ can safely pass the winter. Afraid of frost, like loose, fertile, moist and well-drained acid soil.

The Propagation method of Amorphophallus

1. Ramet: the purple back taro is generally propagated by individual plants, and the propagation is the best when the temperature is about 20 ℃ in spring, but it can also be carried out throughout the year as long as the temperature and humidity are suitable. When propagating, use a sharp knife to cut the root mass with stem and leaf buds, a small amount of reproduction can put the cut root mass with stem, leaf and leaf bud directly in the mud basin, when propagating in large quantities, it should be placed on the seedbed, and when the temperature and humidity do not meet the requirements, the film should be covered with a thin film. Be sure to make the temperature in the film reach 20: 28 ℃ and the humidity above 80%.

2. Cuttage: Amorphophallus sinensis is generally cut with top shoots. The cuttings are 10-15 cm long and 1/3 or 1/2 leaves are retained depending on the size of the leaves. The cuttings are treated with 500ppm for 2-3 seconds, and can also be treated with indoleacetic acid, indolebutyric acid and ABT rooting powder. After cuttage treatment, the plant spacing is 5 × 10 cm, and the cuttings usually take root in 30-50 days, but the survival rate of cuttings is not as high as that of ramet propagation, generally about 50%.

Culture method of Amorphophallus sinensis

1. Soil: the soil of purple back bamboo taro culture requires fertile, loose and good drainage, avoid soil consolidation and stagnant water, and use fertile humus soil and porous coarse medium as matrix. It is generally mixed with rotten leaf soil and peat soil, or it can be mixed with pond mud, peat and perlite at the ratio of 2:3:1, or loose rotten leaf soil rich in organic matter plus 1 inch 3 perlite plus a small amount of base fertilizer.

2. Watering: the purple back taro is not resistant to drought, so it is necessary to give sufficient moisture in the growing season, keep the basin soil moist frequently, and pay attention to spraying water to the leaves, especially when the temperature is high and the air is dry in summer and autumn. to maintain high air humidity. However, attention should be paid to the accumulation of water in the basin soil, so as not to affect the ventilation of the root system, resulting in poor growth or rotten roots, and the temperature is relatively low after the end of autumn, so it is necessary to control the amount of water and keep the basin soil slightly wet.

3. Temperature: purple back taro is native to tropical and subtropical regions, and likes high temperature, humid and semi-shady environment. The suitable growth temperature is 20: 30 ℃, the best growth temperature is 18: 21 ℃ in daytime, 16: 18 ℃ at night, and the safe overwintering temperature is 10 ℃. Therefore, in summer to prevent high temperature exposure, put it in a cool place, winter should pay attention to cold, plants can be moved to a windless, warmer indoor winter.

4. Lighting: purple-backed taro bothers direct sunlight and grows better under indirect radiation or scattered light, and it is easy to cause leaf burns in summer, so it is cultivated in a shade net with a refraction of 7580% in production. If leaf burns are found, they should be moved immediately to places without direct light or shaded facilities or in the shade of trees, and the burned leaves should be cut off to prevent other pathogenic bacteria from invading from the wound.

5. Fertilization: according to the principle of "frequent application and thin application", the mixed fertilizer of peanut bran and compound fertilizer or mature compost should be applied every 2 weeks in the peak growing season. The nutrient composition of fertilizer should be mainly nitrogen fertilizer, followed by phosphorus and potassium fertilizer. Proper application of nitrogen fertilizer can make the color of leaves more beautiful. However, the concentration of fertilization should not be too high, otherwise it is easy to cause leaf burns and fertilizer damage, and even cause plant death in serious cases. Stop fertilizing during dormancy in winter and when it is too hot in summer.

6. Diseases and insect pests: the common diseases of purple back taro mainly include leaf spot and leaf blight. At the initial stage of the disease, 200 times Bordeaux solution was sprayed 2 times 3 times every half month, or 65% zinc wettable powder 600 times solution. The common insect pests are mainly shell insects, which are easy to occur when they are poorly ventilated. 1000 times of fenitrothion EC is used to kill them in the nymph stage.