Disease Control of Carnation in Changxia
The diseases of carnation in Changxia can be divided into two categories: non-communicable diseases and infectious diseases.
1 prevention and control of non-communicable diseases
Non-communicable diseases are usually caused by the imbalance of nutrition, water and temperature and the infection of harmful substances. Although the requirements of water and nutrients of carnation are not strict in summer, excessive drought will make it grow poorly, and its root system is underdeveloped, which leads to the decline of stress resistance; too high moisture will make the soil anoxic and make the roots suffocate and rot. In terms of nutrient requirements, it is best not to use pure N fertilizer, too much N fertilizer, long branches and leaves, tender tissue and poor permeability among plants. Under this condition, the weak plants will be infected first, and if the control is not timely, the diseased seedlings will be infected repeatedly, resulting in the epidemic of the disease and the death of carnation. Therefore, when planting carnation, soil fertilizer should be the main base fertilizer, and P and K fertilizer should be the main topdressing fertilizer. Ensuring proper drying of the ground in high temperature season is an important measure to prevent its physiological diseases. The land where carnation is planted, such as near oil refineries, chemical fertilizer plants, brick factories and other places that produce harmful gases and dust, should often spray water to wash the pollutants on the leaf surface. In addition, the surface of the flat should always be kept clean and hygienic, especially after pruning, the trimmed objects must be cleared clean, which can not only ensure the permeability of carnation but also reduce the latent pathogen.
2 prevention and control of infectious diseases
There are three kinds of infectious diseases of carnation: leaf spot, blight and base rot. These three diseases are all caused by different fungi invading plants, and most of them occur in the high temperature and humidity season from July to September. Germs can spread with wind and rain.
Germicidal drugs can choose mancozeb, chlorothalonil, methyl thiophanate, carbendazim and so on.
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Carnation in Changxia
Phyllostachys pubescens is a perennial herb of the Carnation family. Plants 20 to 30 cm tall, clustered, leaves linear-lanceolate, blue-gray. Flowers solitary or several clustered, pollen red or white, flowering from May to July. Capsule, ripe from July to August. Carnation is native to Europe in Changxia and is newly introduced and cultivated in China. It is light-loving and shade-tolerant. It can survive the winter in the open field in North China and is still evergreen after frost. The suitable growth temperature is 15 ℃ to 30 ℃, and it is suitable to grow in loose and fertile sandy loam. Sowing, dividing plants, cutting propagation. The seeds are usually sown in the open field in September.
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The reproduction method of summer pink
Chang Xia Dianthus is perennial perennial root herb, node expansion, single leaf opposite, plant height l0-15cm, evergreen all the year round, three seasons flowering. Wide adaptability, cold resistance (can resist the low temperature of minus 35℃), drought resistance (only need to irrigate once a month, rarely fertilize), beautiful flowers (flowers can cover the ground in full bloom), soil pH requirements are not very strict (pH value between 5-8 soil can be planted), differentiation, differentiation ability is strong, easy to reproduce, rapid growth. Chang Xiashi
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