What lawn flowers can be planted in front of the south factory for greening?

In southern China, plum blossom, chrysanthemum, cymbidium, cymbidium, rose, rhododendron, camellia, lotus, osmanthus fragrans, narcissus, Chimonanthus praecox, Magnolia grandiflora, peach blossom, plum blossom, begonia, pomegranate flower, cherry blossom, Daphne Daphne, alum, Tang Di and lily can be planted for pre-plant greening. Bauhinia, Hydrangea, Hosta, Carnation, Lagerstroemia, Water Lily, Cuiju, Clivia, Phalaenopsis, Tulip, Carnation (Carnation), hyacinthus orientalis, Marigold, Catharanthus roseus (five-petal plum), Salvia rosea, Salvia glabra (a bunch of blue) and Salvia glabra.

Take leek as an example:

Soil preparation and fertilization

Leek nursery should be convenient for irrigation and drainage. In sandy loam or clay loam where onions and garlic vegetables have not been planted in recent 1 ~ 2 years, deep tillage should be carried out before winter, frozen water should be poured, and then harrowing should be carried out in spring to conserve moisture. Apply 4 ~ 5 cubic meters of decomposed farmyard manure per mu. Add 10 ~ 15 kg dry fine soil, spread it evenly, rake it flat after shallow tillage, and make a ridge. The width of the boundary is 1.2 ~ 1.5 m and the length is 7 ~ 10 m, which is convenient for management.

Suitable for seedling raising

Leek seedlings grow slowly and should be sown early, especially from late March to late April. After soaking seeds to accelerate germination, sow seeds in the seedbed by wet sowing method, cover the soil twice, the first time with a thin layer of soil, and the second time after moisture regain. The total thickness of soil is 2 cm, and the dosage of seeds per mu is 6 ~ 8 kg. Cover the soil with plastic film to increase temperature and keep moisture, and remove the plastic film after emergence. Generally 1 mu seedlings can grow 7 ~ 9 mu of vegetable fields.

Miaochang management

Leek seedlings are about 5 cm high. Water them gently and loosen the soil in time. After 10 cm, decomposed manure or pruned compound fertilizer can be applied with water for 2 ~ 3 times, and 0.5 ~ 1 kg of crystal trichlorfon can be applied with water per mu to kill pests such as leek maggots. After seedling height 15cm, control irrigation to prevent white lodging. Weeds should be pulled out in time. When the seedling height is about 65438±0.2cm, use 0.5 ~ 0.75 kg of 25% herbicide diethyl ether to control weeds, or use 0.65438±0.5kg of 33% herbicide emulsifiable concentrate to spray the ground after sowing and before emergence.

Reasonable colonization

Chinese chives are planted in plots with fertile soil and convenient irrigation and drainage, and 4 ~ 5 cubic meters of decomposed farmyard manure is applied per mu, which is leveled and made into ridges. The boundaries are 2 ~ 3m wide, and every three boundaries are grouped, and a cold-proof belt with a width of 1 m is set on the north side. It is advisable not to bury the leaf sheath when planting, and water it in time after planting.

Tiantuan management

After the new leaves of leek are released, the seedlings should be watered slowly, and the soil should be kept wet with intertillage. After autumn, leek grows most vigorously, so it is necessary to fully supply fertilizer and water. After that, the temperature will gradually decrease and the plants will grow slowly. Keep the surface dry. Leek needs moderate light intensity and strong shade tolerance. But the light is too weak, the accumulation of photosynthetic products is less, the tillers are few and weak, the yield is low, and it is easy to premature aging. Too much light, too high temperature, too much fiber and poor quality.