Open field flower cuttings harvesting and freshness-oleander
[other middle name] Dajie swollen, called winter, Jiujie swollen, Zhunayi, willow peach, licorice
[family and genus] Apocynaceae
[Origin] Nepal, India, Iran, etc.
[plant characters] oleander is an evergreen shrub or small tree. The height of the plant is 5 to 6 meters. With milk. Simple whorls or opposite, linear-lanceolate, 10-25 cm long, entire, leathery.
[cuttage harvest] the harvest site is the first-year branch of oleander. Harvesting should be carried out from May to July every year. In order to obtain ideal reproductive effect, the top branches with short internodes and full growth should be cut, which is best combined with plastic surgery. The product should be precooled as soon as possible.
[grading] the cuttings harvested should be graded on the premise that they have the typical characteristics of the variety, are free from diseases and insect pests and can reproduce normally: the length of the primary cuttings is about 60 cm, the length of the secondary cuttings is about 50 cm, and the length of the tertiary cuttings is about 40 cm. The difference in the length of cuttings of the same grade should not exceed the standard ±2 cm.
[packaging] tie up the oleander branches of the same grade and variety every 10, and code them into the film-lined tile carton marked with product name and air hole respectively.
[fresh-keeping method] the cuttings can be stored in an environment with a relative humidity of 90%-95% and a temperature of 5-7 ℃.
[storage period] according to the above method, oleander branches can usually be stored for 3 to 5 days without affecting reproduction and use.
[horticultural application] oleander has a strong growth and a long flowering period. it is planted in many rows in the south, and more potted plants are planted in the north of our country.
[tips out of the nursery] the propagation of oleander by cutting is carried out more than from May to July every year, so the daily management of the mother plant and the supply arrangement of cuttings should be done in advance.
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Diagnosis and treatment of oleander poisoning in cattle
Oleander is an ornamental plant, which is often planted by local farmers. According to relevant data, oleander contains cardiotonic glycosides, which has stimulating effect, which can cause hemorrhagic gastroenteritis, increase the concentration of sodium ion and calcium ion and decrease the concentration of potassium ion in myocardial cells. as a result, a series of pathological phenomena such as atrial fibrillation and arrhythmia occur in animals. 1. The incidence in July 2002, a 3-year-old yellow cow in Gumudi Town, Miquan City, ate oleander in the courtyard. Two hours later, the cow developed abdominal pain and got up and lay down.
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Oleander planting and cultivation
1. The planting time is in spring. It is cultivated in the open field in the Yellow River basin and its southern area, potted in the cold area of the north, and overwintered indoors. When transplanting, it must be planted with soil balls. The planting site should be sunny and without stagnant water. Summer can also be transplanted, but need to trim some branches, cut off the right amount of leaves, in order to reduce water swallow hair and promote survival. The pot is printed and changed every 2-3 times, and 6 parts of rotten leaf soil and 4 parts of river sand mixed culture soil are selected on the pot, and the horseshoe piece can also be used as base fertilizer before planting. Cut short before planting
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