Key Technical points of Flower planting and Management of African Chrysanthemum in greenhouse

1 Cultivation techniques

1.1 soil preparation

As an important cultivation technique in Gerbera chrysanthemum greenhouse flower cultivation management, soil preparation and bed cultivation occupy an important position in the whole flower cultivation development. In general, in order to improve the survival rate of gerbera greenhouse flower planting, in the seedling management of seedlings, the soil layer should be deepened at least 25cm, so as to meet the planting demand of flowers. And before planting flowers, the soil should be deepened, and the organic matter and soil fertility in the soil should be treated. Through base fertilizer treatment, disinfectant and fungicide are applied to flower planting. Usually, 0.5% formalin or 50% carbendazim powder is mixed with the subsoil to eliminate fungi in the soil layer. After adding disinfectant, the ridge spacing of seedlings and corresponding planting preparation should be carried out after 3~ 5 days of film mulching. The maximum survival rate of seedling planting can be achieved by controlling the height of seedling planting ridge 30cm, width 20cm and plant spacing 30cm.

1.2 Seedling selection and planting

Seedling selection and planting is a cultivation technique implemented after the completion of soil preparation. In this technical treatment, seedling selection and planting should be separated.① In seedling selection, we should select plants with healthy, green leaves, developed roots, more fibrous roots, white color and no mechanical damage.② Planting management: Generally, planting management is suitable for April to June, watering the soil within 2 to 3 days before planting, and selecting the planting time of seedlings in cloudy days or in the morning and evening. Choose the principle of deep hole shallow planting, expose the roots 1~1.5cm above the soil surface, compact the roots to prevent loosening the roots when watering.

1.3 post-cultivation management

Post-cultivation management is also an important management work in gerbera flower planting management in greenhouse. If we want to improve gerbera flower planting management level in the implementation of existing management work, we should pay attention to the analysis of post-cultivation management work. Generally speaking, the post-cultivation management is divided into two stages: ① seedling management, because the seedlings themselves in the whole planting management are relatively fragile in the greenhouse flower planting, the damage phenomenon often occurs in the whole seedling planting management. Under this condition, in order to improve the whole seedling planting management level, drip irrigation should be adopted according to the requirements of the implementation of cultivation management technology, and the water supply and humidity control after seedling cultivation should be analyzed.

After the seedlings grow into seedlings, they should be planted and managed, mainly with large fertilizer and water, to promote the growth of seedlings. At the same time, the light intensity and light duration of seedlings should be reasonably controlled.② florescence management: when the plant enters florescence, the flower stem elongates and the flower opens, then a large amount of nutrients are needed to meet the growth needs of the plant. Nursery managers should observe the flower bud opening in time, remove inferior flower buds in time, and reduce the nutrient absorption of flower buds to plants. Appropriate application of nitrogen, phosphorus and potassium fertilizers to plants to promote plant growth.

2 Pest control techniques

2.1 disease Control

Disease control is an important work in gerbera flower cultivation management in greenhouse. In order to improve the quality of flower seedling management in nursery, it is necessary to analyze disease control in time according to the requirements of seedling planting management, so as to lay a foundation for the control of growth conditions of the whole plant in the process of disease control analysis. For example, in the prevention and control of gray mold disease, the growth density of plants and the air circulation of plants should be analyzed, chemical control should be adopted, and in the daily watering process, watering should be mainly under the shrubs.

2.2 pest control

Pest control is also a technology that should be emphasized in the cultivation and management of Gerbera in greenhouse. Because of the great harm of pests, in order to improve the efficiency of gerbera greenhouse flower cultivation management, we should timely analyze the causes of pests in the whole cultivation management according to the requirements of its cultivation management, and adopt chemical spraying and physical pest control techniques to implement pest control in the whole plant cultivation. When spraying with pesticides as the main method, the pesticides should be sprayed once every 7 days to reduce the occurrence rate of pests, ensure the air circulation in the nursery in time, and reduce the occurrence of pests affected by environmental factors.