1. Shading and covering: Shading nets or branches should be covered when the temperature is high and the light is strong. 2. Shaping and pruning: After planting, it should be appropriately cut short, and 3-4 main branches with vigorous growth and uniform azimuth distribution should be selected, with the main branch spacing of 15-20cm. When the branches are too long, they should be cored and cut off, and the dense, thin and overgrown branches should be sparse. 3. Soil improvement and fertilization: organic fertilizer is mainly applied, supplemented by potassium fertilizer, and appropriate intertillage and deep ploughing. After the crown is enlarged, it is necessary to expand the hole year by year, and apply manure to improve the soil fertility.

I. Key points of management technology of Dongkui Myrica rubra

1, shading and covering

When the temperature is high and the light is strong from July to September, the sunshade net or branches should be covered, and then removed in June 5438+ 10.

2, plastic pruning

(1) After planting, cut the trunk at the height of 60-80 cm, and then select 3-4 branches with vigorous growth and uniform azimuth distribution as the main branches, with the spacing of 15-20 cm and the opening angle of 45-60 degrees.

(2) Cored and broken the excessively long branches, and appropriately pruned the dense, sparse and overgrown branches.

(3) After entering the fruiting period, cut off dead branches, clustered branches, diseased branches and weak branches, and the weak fruit branches can be retracted and renewed.

3. Improve soil fertility

(1) Apply organic fertilizer as the main fertilizer and potassium fertilizer as the auxiliary fertilizer, and control the amount of phosphate fertilizer.

(2) Pay attention to soil improvement, appropriate intertillage and deep ploughing, and clean up weeds and miscellaneous trees around the crown. After the crown is enlarged, the holes should be enlarged and deepened year by year, and manure and plant ash should be applied to improve the soil fertility.

(3) Two years before planting, topdressing 1 time before germination of spring shoots, summer shoots and autumn shoots, each plant can be topdressed with 2 kg of animal manure (or 0. 1 kg of urea) and 0.2 kg of potassium fertilizer, which can be mixed with water and applied separately.

(4) The fruit trees that have been put into production should be topdressing 65,438+0 times a year from fruit picking to spring germination, and topdressing 65,438+0 times when conditions permit. According to the standard of high-yield trees, the annual fertilization amount per plant is 50 kg of manure+30-40 kg of plant ash+no more than 0.3 kg of phosphate fertilizer.

(5) Fertilization should also be carried out after fruit picking. The amount of fertilizer applied this time accounts for 60% of the whole year, and spring fertilizer accounts for about 40%, which is conducive to restoring tree vigor and promoting flower bud differentiation.

4. Prevention and control of pests and diseases

(1) brown spot disease: at the early stage of germination of spring shoots and summer shoots, 70% thiophanate methyl 800 times solution and 50% carbendazim 1000 times solution were sprayed.

(2) Leaf roller moth: spraying 50% cartap 1000 times or 20% pyrethroid 4000 times from May to August.

(3) Insect repellent and oyster scale: spraying 40% omethoate 1000 times or 40% quick kill 1500 times.

Where is the origin of Dongkui Myrica rubra?

1. The main producing areas of Dongkui Myrica rubra are Hangzhou, Zhuji, Taizhou, Lishui, wencheng county, Xianju and other places in Zhejiang Province.

2. Dongkui Myrica rubra is native to Dongao Village, Jiangkou Street, huangyan district City, Zhejiang Province. This variety has been planted since 1950s, and was popularized by 1980.

3. The weight of Dongkui Myrica rubra is 20-25g, and the juice content is 74%. It is the largest variety of Myrica rubra in China and even in the world. In the 1970s, a professor at Zhejiang Agricultural University was named? Dongkui? , take? The head of the East? Meaning.