Planting Technology Lists
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Three traps should be avoided in purchasing Phalaenopsis seedlings.
Now it is the sales season of Phalaenopsis seedlings. according to the consumption habits of our country, the sales peak of finished flowers of Phalaenopsis is concentrated on the eve of the Spring Festival. Therefore, the Phalaenopsis seedlings purchased by manufacturers at this time are basically 2.5-inch medium seedlings, that is to say, according to the normal growth cycle of Phalaenopsis, the seedlings of this specification can blossom and appear on the market just before the Spring Festival next year. However, many manufacturers have experienced such embarrassment. They obviously bought 2.5-inch seedlings, but they could not blossom as scheduled. They suspected that there was something wrong with the seedlings, but the seedling suppliers said they were unripe.
2019-01-16 -
Control of powdery mildew of cut rose
Powdery mildew is the most common disease in rose leaves. Prevention should be given priority to and prevention should be combined to achieve substantial results. The methods of prevention are: 1. Before the plant germination in early spring, a 600-fold solution of carbendazim wettable powder was sprayed to kill overwintering bacteria. two。 After spreading leaves in the following spring, Chinese rose plants were sprayed with 1000 times carbendazim wettable powder every half month for 3 to 4 times in a row to consolidate the preventive effect, or the same amount of Bordeaux solution was sprayed every half month for 3 to 4 times in a row.
2019-01-16 -
Control of powdery mildew of cut rose
Powdery mildew is one of the most important diseases of rose, which harms leaves, tender shoots, buds and pedicels. The control methods are as follows: strengthening cultivation management and timely removal of the disease; pruning in time to improve ventilation and light transmission conditions; nitrogen fertilizer should not be too much, it is necessary to increase the application of phosphorus and potassium fertilizer. To prevent and cure the disease during the growing period, 15% fenvalerate wettable powder can be sprayed with 2000-4000 times of metoprolol wettable powder or 1000 times of 50% metoprolol wettable powder, 1000 times of 50% benzoate wettable powder, and 800 times of 30% fluconazole.
2019-01-16 -
How to prevent and cure powdery mildew of rose
Powdery mildew mainly harms leaves, tender shoots, buds and pedicels of rose. After the young leaves are infected, the leaves shrink, curl into deformities, and sometimes become purplish red. The old leaf is susceptible, the leaf surface appears nearly round, water stain-like chlorotic macula, seriously damaged, the leaf withered and fell off. The damaged parts of tender shoots and pedicels were slightly enlarged and the top of them bent to the ground. After infection, the flower bud can not open or the flower posture is deformed, and the surface of the damaged part is evenly covered with white powder layer. In open field cultivated rose, powdery mildew occurred more frequently in spring (May, June) and autumn (September and October).
2019-01-16 -
Identification and control of rose powdery mildew
Symptoms: germs infect leaves, floral organs, tender shoots of rose, etc. In early spring, the leaves of the diseased buds are covered with white powder on both sides. The leaves shrunk and became thicker, and then gradually dried up and died, which became the source of primary infection. During the growing season, the leaves were infected, first appeared small white powder spots, then gradually expanded into round or irregular shaped white powder spots, and in severe cases, the white powder spots were connected to each other. When the young shoots and petioles fell ill, the disease spots increased slightly and the internodes shortened. The buds are covered with powdery layer, withered and withered. A lightly diseased bud
2019-01-16 -
High yield techniques of cut rose in winter
Winter is the season with a large gap in cut rose in the northern region, and the price of cut flowers is also higher in this season. Therefore, to increase the winter yield of cut rose is very important to increase the income of cut rose throughout the year. This paper introduces a set of high-yield technology of cut rose in solar greenhouse: 1. Ensure that the room temperature and ground temperature first adopt reasonable greenhouse structure, ensure that the greenhouse absorbs solar light energy to the maximum, increase the indoor temperature, and keep the room temperature at about 25 ℃ in daytime, the highest can not exceed 28 ℃. Second, adopt
2019-01-16 -
How to produce a good yield of cut rose in winter
Winter is the season with a large gap in cut rose in the northern region, and the price of cut flowers is also higher in this season. The technical essentials of high yield of cut rose in winter in solar greenhouse are briefly introduced as follows: first, take various heat preservation measures to improve the room temperature and ground temperature of the greenhouse. First of all, it is necessary to adopt a reasonable greenhouse structure to ensure that the greenhouse can absorb solar energy to the maximum and increase the indoor temperature so that the room temperature during the day is about 25 ℃, and the maximum is not more than 28 ℃. Second, the greenhouse should be covered with mats, straw mats, heat preservation quilts or paper to reduce heat consumption.
2019-01-16 -
Key points of soilless cultivation of rhododendron
1. The root system of rhododendron is very slender, which requires loose matrix to facilitate air permeability and drainage. 1 part of vermiculite, 1 part of pearl sand, 1 part of river sand and 1 part of cinder were mixed in proportion. After mixing the substrate, sterilize it with 0.1% carbendazim solution, mix it evenly into the substrate and cover the plastic film for 1 day. Then rinse with clean water for many times, dry, mix well with 0.4% agricultural compound fertilizer solution, then cover it with plastic film for a month, and then use it in the basin. 2. The preparation of nutrient solution Rhododendron has strict requirements for fertilizer. During the growing period, thin fertilizer is applied frequently.
2019-01-16 -
Soilless cultivation and Management of Phalaenopsis
1. Temperature. During the period of vegetative growth, the temperature is generally controlled at 20-35 °C. The temperature required for vernalization of large seedlings is 15-18 °C. The temperature requirement from arrow drawing to flowering is 18-20 °C at night and 25-30 °C from day to day. The ornamental temperature at flowering stage should be controlled at 15-20 °C. The temperature difference between day and night is generally more than 10 °C, let alone negative temperature difference between day and night. two。 Light. The light intensity of young seedlings (from 6 months old to 6 months old) is controlled at 5000-8000 lux; the light intensity of medium seedlings (6 months old to 6 months old) is controlled at 5000-8000 lux.
2019-01-16 -
Symptoms and control methods of Botrytis cinerea in Phalaenopsis
Botrytis cinerea is one of the most common diseases in the production of Phalaenopsis, which often occurs in its growing season, especially in the greenhouse in winter and spring, the pathogen can infect any part of the plant. If the cultivation management is relaxed, it is more conducive to the occurrence and epidemic of the disease, and in serious cases, it can cause a large number of fallen flowers and leaves, which not only affects the flowering of the plant, but also directly reduces the ornamental value and yield of Phalaenopsis. (1) warm and humid conditions are the main conditions for the prevalence of Botrytis cinerea. That is, the relative humidity is about 90% and the temperature is about
2019-01-16