I. Election of the land
The choice is to go to the sunside, where the soil is fertile, the soil is loose and the earth is thick and well drained. After the selection, the field was tilled in the autumn and the foot was fertilized, and the dredge was razed and made into a nursery bed 13-15 cm wide。
Ii. Cultivation methods
Seed processing: seeds mature to harvest, rinse, wash, dry, wet sand layer. Pre-plant seeding is impregnated with warm water, and seedlings are administered until seed is launched。
Seeding methods: it can be broadcasted, broadcasted, and so on. The seeds are normally sowed in late december, with ditches open on the bed, 15 centimetres away and 4-6 centimetres deep, so that the seeds are evenly distributed in the ditch, and the soil is 1-1. 5 centimetres thick。
2. Transplantation usually takes place between february and march or between october and november. Caves open by row, with a distance of 3. 5-4 metres, with a depth of 40 centimetres, glycerine applied to the ground, adding 15-20 centimetres to the ground, and then a seedling of 1-2 years (with mud and some leaves cut off to increase the rate of survival) was planted inside the caves, which were crushed with dust. In addition, adhesive, barbed-down reproduction methods can be used, usually during spring and autumn。
Iii. Field management
Once seedlings are produced, weeds should be removed in time to prevent grassland. When the seed is 10-13 cm high, the first pine soil weeding takes place 2-3 times a year; in winter and summer, roots are grown in combination with pine grass. In case of drought, the soil is watered。
After planting, two times a year, the first before autumn and the second before winter, with organic fertilizer
For the better, the application depends on the growth of the plant。
In the second year following the birth of the larvae, a new twig was formed at the beginning of the winter and spring, cutting out the dead branch, the weak branch and the root branch, as if they were convulsed by the main branch. Depending on their growth, adult trees undergo one annual remodelling to facilitate directed growth, ventilating light and promoting the development of fruit branches。
Pest and pest control:
1 disease rusty disease: after the hazard, the leaf's surface produces yellow and brown powder, causing loss of water on the leaf and death of dead char. It can be sprayed at the beginning of a disease with 20% rusty emulsions 400 times the fluid; or at 50% of the degenerative humid powder 800 times the fluid, or at 1:1,200 bordeaux. During the onset of the disease, 2500-4000 times more humid spray was sprayed every 15 days or so。
2. Pests female chastity moths: chastity as hostess, larvae tossing webs, feeding on the net, insects often form large silk webs that cover the whole tree and feed the leaves. In serious cases, trees die. (b) prevention and control methods: elimination of filaments from virgins at all times, and eradication of beryllium, eggs and larvae; in larvae, 90% trichlorfon 1000-1500 times the fluid was sprayed。
White wax worm: the tree is weakened and branches die. (a) method of prevention: the combination of trimmed, the removal of some of the insect-intensive branches and the scraping of the insect-intensive ones with something like bamboo; after incubation, 100 times the mixture of liquid spray can be used for 25% amthion emulsion of 0. 5 kg when crawling about 60% from the mother。
Cows of clouds: larvae larvae larvae larvae and wood, and insects gnaw new pelvis. Methods of prevention: timely infestation of insects; 50 per cent of the impregnable pine cream is sprayed 40 times into the insect hole in the egg, larvae and vermin in order to poison the larvae that enter the wood。
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