Breeding method of Ligustrum lucidum
Ligustrum lucidum generally uses tender wood cutting, divided into container cutting and ground cutting, and the container cutting cost is high. this paper mainly introduces the method of single bud cutting in small bamboo arch shed.
Cutting time: it should be carried out when the new shoots grow slowly, that is, from May to October, preferably in the rainy season.
Land selection and land preparation: it is appropriate to choose land with loose and fertile, flat terrain and good drainage, applying 125 kg calcium superphosphate per mu, turning 15 cm deep and then fine raking flat to make a high border 1.2 meters wide and 20 cm deep.
Cutting cuttings: first of all, choose the mother tree. Cuttings should be collected from young mother branches, preferably semi-lignified branches of the same year. The best harvest time should be from May to June and from September to October.
Cutting: a single bud should generally be inserted into 1/2 of the length of the branch, not too deep; the density is that the cuttings do not squeeze each other, and it is appropriate to look down and see the base of the cuttings.
Insert bamboo arch and cover film: when inserting bamboo arch, a "×" bamboo arch should be inserted at both ends of the seedling bed to support the film, with a height of 0.7 m ~ 1.0 m, and the spacing of each arch should be 0.8 m. Generally use a disposable drip-free film with a width of 3 meters, and finally seal the film completely with soil or river sand.
Post-cutting management: softwood cuttings require higher air humidity and suitable substrate water content, so proper shading is very necessary. After cutting for 20 days, the air humidity in the small arch shed should be kept above 95%. If the humidity in the small arch shed is low, the film should be lifted and watered in time, and the leaves should be sprayed with 500 times carbendazim plus anthrax magnesium solution and sealed. The cuttings from May to June were watered once a week, and those cuttings in September were watered once every 10 to 15 days. If the sun is too strong, it will increase the temperature of the inserting bed and reduce the humidity, which is not conducive to the survival of the cuttings. Reed curtains, bamboo curtains and sunshade nets can be used to shade the sun. Generally, the intensity of sunshade is about 70%. The temperature of seedbed substrate should be controlled in the range of 22 ℃ to 28 ℃. Under this temperature, cuttings are the easiest to root. In general, Jinsen privet begins to take root in about 15 days, and seedlings can basically be refined in about 40 days. From May to June, usually cover the sunshade net at about 10:00 in the morning, and collect the sunshade net to refine the seedlings after 3 pm. After refining the seedlings for about 20 days, they can be put on the pot.
Ligustrum lucidum cuttings rooting and sprouting into seedlings need to be watered frequently to prevent drying. At the same time, do a good job of fertilization, fertilization to achieve less frequent application, to avoid fertilizer burning seedlings.
Pest prevention: fungicides such as methyl thiophanate and chlorothalonil are sprayed every 15 days or so. Insect pests are mainly moth larvae, which can be used as insecticides such as methylcyanide polyester, trichlorfon and so on.
Overwintering management: saplings must take heat preservation measures when overwintering, such as covering film and so on.
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Propagation of Taxus chinensis var. mairei
Choose a suitable nursery to choose fertile, loose, neutral or slightly acidic soil with good drainage, preferably in woodland or semi-shaded fertile land. Apply enough base fertilizer, rake flat, and prepare the bed for planting. The seeds matured in October and were harvested in time and placed in the mixture of water and fine sand (water / sand ratio 2 ∶ 1). Rub the seeds on the washboard, remove the seed coat, and wear the hard meat seed coat. The dry land without stagnant water and digging pits were selected and stored in the pits mixed with wet river sand at the ratio of 1 ∶ 2. Take it out in March of the following year
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Control techniques of diseases and insect pests of Ligustrum lucidum
Ligustrum lucidum (Ligustrum lucidum), as a hot-selling variety of landscaping seedlings in recent years, will occupy an important position in the recent engineering color seedlings market. Ligustrum lucidum is a small evergreen tree of the genus Ligustrum lucidum of Oleaceae. It has the common characteristics of Ligustrum lucidum and likes warmth. It grows very fast and needs a large amount of fertilizer in the growing period under slightly acidic soil conditions, but it grows poorly under the soil conditions of heavy sand and poor fertility. Ligustrum lucidum is native to Japan, so it is more hardy. The lower the temperature, the brighter the golden color of the new leaves. At the same time, it has strong heat resistance and will not be affected by high temperature above 35 degrees Celsius.
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