Heather, is it poisonous? How to plant it? Planting techniques and breeding methods.

Heather , English name Photinia, alias Millennium Red, Fan Gu Mu, etc. Evergreen shrub or small tree of Photinia of Rosaceae native to China. The flowering period is from April to May, and the fruiting period is 65438+1October. Round crown, dense leaves, red and tender leaves, white flowers, dense flowers, red fruits in winter and bright eyes are common cultivated tree species; The wood is solid and dense, which can be used to make wheels and handles of appliances; Leaves and roots are used as tonics and diuretics, which have sedative and antipyretic effects; It can also be used as a soil insecticide to control aphids and inhibit the germination of potato spores. Seed oil is used to make paint, soap or lubricating oil; It can be used as the rootstock of loquat, and the loquat grafted with heather has long life, poor soil resistance and vigorous growth.

The cultivation method is as follows:

The propagation of heather is mainly sowing, with many causes and effects and a wide range of provenances. The branches are smooth. 165438+ 10, after harvesting the seeds, soak them in clear water, rub off the seed coat after fermentation, rinse them off to get sand-stored seeds, and sow them the next year. It can also be propagated by cutting and layering. Photinia is an excellent ornamental tree species in landscaping.

The soil in the planting area should be loose, fertile, slightly acidic to neutral, with convenient irrigation and good drainage. Before planting, 3000 kg of decomposed manure and 50 kg of calcium superphosphate were applied per mu, and the digging depth was more than 25 cm. At the same time, pesticides are used to control underground pests. After ploughing, the soil will be leveled and a drainage ditch will be opened to make a seedbed. The bed width is about 1 m.

The transplanting time of seedlings is usually in March-April in spring and June10-165438+10 in autumn, which depends on the local climate conditions. The planting spacing should be determined according to the time of leaving the nursery and the cultivation goal. If you plan to plant annual shrubs for sale, the plant spacing should be 35x35 or 40x40, with about 3000 plants per mu. When transplanting seedlings, carefully unpack or remove the nutrition bowl to ensure the integrity of the root soil ball and dig holes at a fixed point; Pile fine soil on the root, stretch the root and compact it gently. After planting, thoroughly water the roots in time.

Special attention should be paid to water management in the slow seedling stage after planting. In case of continuous sunny days, water should be watered every 3-4 days after transplanting and every 10 days thereafter. In case of continuous rainy days, drainage should be done in time. After about 15 days, the seedlings can be fertilized after a slow seedling stage. Urea is applied every half month in spring, with a dosage of about 5 kg/mu, compound fertilizer is applied every half month in summer and autumn with a dosage of 5 kg/mu, and decomposed organic fertilizer is applied once in winter with a dosage of 1500 kg/mu. Might as well dig a ditch and bury it. Fertilization should be based on the principle of applying thin fertilizer frequently, and the dosage should not be too large at a time to avoid damaging roots and burning seedlings. Weed and loosen the soil in time at ordinary times to prevent soil hardening.

Heather has strong resistance and no destructive pests and diseases have been found. However, if the management is improper or the nursery environment is not good, gray mold, leaf spot or scale insects may occur. Spraying 50% carbendazim 1000 times solution can prevent gray mold, and spraying 50% zineb 800 times solution can prevent gray mold in the onset period. Leaf spot can be controlled by 300-400 times of 50% carbendazim or 300-400 times of Tobuzin. Scale insects can spray dimethoate emulsion 200 times or 800 times to 1000 times.