山东绿化苗木Should choose the soil deep, fertile osteoporosis moist, abundant water, good drainage, slightly acidic sandy loam, loam as nursery, water and alkaline soil should be used. Tillage, soil disinfection, fertilizer and other broad-leaved tree species is basically the same.
Camphor tree planting winter sowing, sowing can be, but with spring sowing for good. Potassium Permanganate solution soaking with 0.5% seeding 2 hours before sterilization, and with 50 degrees warm water 2-3 times C intermittent soaking pregermination, in order to improve seed germination rate.
By drilling, a distance of 20-25 cm, sowing seeds 30-40 per meter ditch grain, about 12 kg per mu planting, after planting with Tu Hui or yellow soil cover, thickness to seed for the degree, then cover with straw thermal insulation and moisture retention, to promote seed germination.
When the seeds germination unearthed, uncovering the cover; seedling sends 3-5 leaves, can be fixed line between seedlings, every metre long channel reservation about 20 seedlings of Cinnamomum camphora seedlings, rapid growth, the general annual seedling height up to 50 cm, because the annual seedling root and fibrous root is little, the best in the process of transplanting nursery a year to the out of nursery planting; if Pei Da mu, also may according to need to transplant cultivation one or two years chupu.
In seedling cultivation should be timely cultivation, weeding, ridging, fertilizing, irrigation and pest control and other training work.
1, Zhang tip moth. Year the generations, the larvae shoot dead, murdered seedlings.
Methods of prevention: available 40% dimethoate 200-300 times Pensha larvae, when lots of larvae pupate during combination of forest tending weeding hilling, kill insect pupa.
The larvae damage the leaves, prevention methods: 90% crystal dipterex or 50% marathon emulsion each 2000 times Pensha, also can use 0.5 kilograms of Rhododendron molle or Tripterygium powder and water, 75-100 kg made pensha.
3, Orthaga Achatina butler. Larvae feeding on monarch sets new shoot buds, resulting in a new dieback even whole plant death.
Methods of prevention: when the larvae started activities has not yet formed a net nest, 90% times Pensha trichlorfon 4000-5000 crystal, such as larvae has net nest, artificial removal of burn.
4, powdery mildew. Near the beginning of seedling leaves abaxially main veins appear grey brown spots, later spreading to the rest of the back of the blade, and the emergence of a layer of white powder.
Methods of prevention: pay attention to health appropriate nursery, seedling thinning, found in diseased plants should be removed immediately burned, symptoms significantly, with the LSSS Baume degree 0.3-0.5, spray once every 10 days, continuous spray 3-4 times.