Harm of oleander to goldfish
Oleander alias willow, oleander belongs to the genus, oleander family. Our introduction has been long, everywhere, there are cultivated, is a common garden flowers. Oleander whole plant is highly toxic, human and animal ingestion is dangerous. Oleander leaves, petals, fruits and twigs fall into the goldfish bowl, will cause goldfish juvenile fish, big fish all died examples are common. Its reason, because oleander mainly contains yellow clip glycoside a, yellow clip glycoside b, clip glycoside a, yellow clip second glycoside a, yellow clip second glycoside b, yellow clip glycoside c and other cardiac glycosides, has a toxic effect on fish, can cause goldfish acute poisoning and death.
Prevention and treatment methods are: ① avoid planting oleander next to goldfish bowl;② if oleander brought by wind blowing is found, fish should be taken out immediately, water should be changed, and the fish bowl should be disinfected with permanganate to ensure the safety of goldfish.
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Propagation method of oleander
Mainly to cuttage, striping can also be done. 1. Cuttings were cut in Shangdian from late March to April every year. Strong 1-2-year-old branches were selected as cuttings, cut into segments of 15 cm long, immersed in 20 ℃ of water, and the depth of water was 1 × 3 of the length of cuttings. Change the water once a day. Seven days later, when the water wound turned white, it was taken out and inserted into the cuttings, and it was covered and moisturized, and it could take root in about 1 month. Or water insert from June to July. After taking root in January, it moved into the soil. 2. the striping is carried out in the rainy season and can take root after February.
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Technical requirements for cultivation of oleander
1. Choose warm and humid climate for land preparation, sunny, well-drained, sandy loam. two。 The propagation method of oleander is simple, and the survival rate is very high. Cuttings, striping and water cutting are usually used. The main results are as follows: (1) the method of cutting can be either hard or soft. Hardwood cuttings are carried out in early spring when combined with seedling pruning. The branches are 15-20cm long, tied together every 20 ℃, soaked in 20 ℃ water, soaked in water seeds in 3 places, often changed water, soaked in about 8 days, some branches turn white, top hair.
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