Breeding method
With root insertion, branch insertion and tiller breeding.
(1) The single plant of the 4-6-year-old, root-developed, vigorously growing, and excellent sturdy plant is selected as the parent plant. In early February, the soil around the roots of the mother plants was excavated, and the rough lateral roots of the chopsticks were cut and cut into small pieces of 15 cm in length. On the prepared surface, the ditch was spaced 15 cm apart and the plant spacing was 10 cm. Insert the root obliquely into the soil, slightly expose the top of the soil surface, cover the earth with a little pressure, and remove the manure water and cover the grass. About two months later, new shoots emerged. At this time, the cover grass was removed and the manure was poured once. When the seedling height is about 5 cm, weeding and weeding water will be performed once. Late spring or winter can be planted. Transplanting method is: Intercropping spacing of 2 meters × 3 meters, digging depth of 60 cm or so, diameter of 50 cm, applying 10 kg of cooked base fertilizer. One plant per hole, fill and compact water.
(2) Branches are planted into 1-2 years of vigorously growing, disease-free shoots, take the middle section, in February, cut into 20 cm long cuttings, inserts must retain 3 bud eyes, soil end cut flat, lower end near The section is cut into bevels. Insert the lower end of the cutting into 1 mL/L (ppm) of butyric acid solution
Wu Yan
Wu Yan
, Dig out for half an hour and insert 10 cm × 20 cm obliquely into the seedbed at a spacing of 2 3 of the ear length. Do not insert it. Cover soil compaction, watering shade. Rooting can usually take place within 1-2 months. After April 20th, new shoots from the axillary buds are planted on the ground and can be transplanted in the second year.
(3) After the birth of the Wusong easy tiller, the lateral roots can be cut out every winter at a distance of 50 cm from the mother plant, and the cortex can be cut every 10 cm to cover the grass with fertilization. In the spring of next year, a lot of root seedlings will be taken out, cover grass will be removed, and transplanted when the seedling height is about 30 cm.
Field management
Land selection and site preparation
Wu Song is not strict with the soil, and it can usually be planted on hillside, plain, behind the house, or beside the road. Neutral, slightly alkaline or slightly acidic soils can grow, but it is better to use a loamy, fertile, well-drained loam or sandy loam soil for seedbeds. Low-lying land should not be planted. The basal manure 2000-3000 kilograms per acre is used as a basal fertilizer, deep-spread in the sun for several days, and the smashed soil is flattened to create a sorghum that is 1-13 meters wide.
After transplanting, management must be strengthened, timely watering during drought, and pay attention to loose soil and weeding. Each year, the farmer's manure is applied along the ditch before being frozen. When the plant height is 1-1.5 meters, the top of the trunk is cut off at the end of the fall to promote more branches. The flowering result tree should pay attention to the application of phosphorus and potassium fertilizers before spring. The old tree should be properly cut off the dense branches, or cut off the dead branches or empty trunks of insects to facilitate the renewal.
Trimming
Sapling plant height 80-100 cm cut off the tip of the main stem, promote its germination, in the lateral branches to grow on all sides, choose to stay 3-4 robust branches, nurture to become the main branch; the second year of summer, in the main foliage Three or three branches with well-developed growth and development are selected for the daytime and cultivated into sub-branches. Lateral branches are released on the main branch later. After several years of plastic trimming, it has become a naturally happy-shaped, high-yielding tree with an open space inside the outer circle, an open crown, air and light transmission, and a dwarf and low crown. After 3-4 years, it will enter the full fruit period. Every year in the winter, the dense branches, overlapping branches, leggy branches and diseased branches must be cut off. Shoots with thick shoots and full shoots should be preserved, and all can form fruiting branches. After each pruning, apply topdressing fertilizer once to restore the tree vigor.
After the plants entered the recession period, the growing trend weakened year by year, the flower buds decreased, and the yield decreased. At this time, the old trees can be felled and the seedlings sprouting in the rhizosphere can be reared and rejuvenated.
Pest control
(1) Coal disease
Also known as coal pollution because of locusts
Wu Qi - plant traits
Wu Qi - plant traits
5. The scale insects are attacked by Wusong, which induces irregular black-brown coal-like spots. Covering thick coal seams on the late leaves and technical stems, the diseased trees have little flowering.
Control methods: Aphid and scale insects are sprayed with 2000-3000 dilution of 40% dimethoate emulsion, or 25% iminophos 800-1000 times, once every 7 days, 2 to 3 times . Onset of spraying 1: 0.5: 150-200 Bordeaux mixture, 10 to 14 days 1, playing 2 to 3 times.
(2) Rust
The disease mainly harms the leaves of E. rutaecarpa. In the early stage of the disease, yellowish-green dots are formed on the leaves, which are not obvious in the round shape, and the orange-yellow small spots cause the leaves to die.
Control methods: Spraying wave US 0.3 degree lime sulfur or 65% zein zinc WP 500 times, once in 7-10 days.
(3) Old woodworm
The larvae grazing in the trunk, stem hollow death, from July to October in the ground below 30 cm main stem appeared on the main colloidal secretions, sawdust and insect waste.
Control methods: Use a knife to scrape off the egg pieces and hatch worms. The larvae enter the interior of the wood and can be filled with wettable 666 powder and 50 times liquid outside the boring hole, or the immersion 80% diuretic stock solution is used to stuff the larvae and seal the hole to kill the larvae.
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