Winter Management of Phalaenopsis
Phalaenopsis needs to be cultivated in high temperature greenhouse in the north in winter. In order to create suitable environmental conditions for the growth of Phalaenopsis, we should do a good job in the following aspects:
1. Temperature: the optimum temperature for the growth of Phalaenopsis is 25 ℃-30 ℃ in daytime, more than 32 ℃, which is disadvantageous to growth and flower bud differentiation. 18 ℃-20 ℃ at night, not less than 15 ℃. If the temperature is kept high all the time, it is beneficial to its flowering.
Second, humidity: Phalaenopsis likes higher air humidity and should be kept at 70% MUR 80% during growth. Therefore, water should be often sprayed into the surrounding space to increase humidity, but the moisture of the matrix should not be too large, otherwise it is easy to rot the root. The dry substrate is conducive to the growth of new roots.
Third, lighting: open the shade net in time according to the weather conditions every day to promote the photosynthesis of Phalaenopsis, and open the skylight to make it ventilated when the temperature or humidity is too high.
Fourth, fertilization: fertilization should adhere to the principle of "frequent application of thin fertilizer". 1500 times compound fertilizer and 5000 times boric acid can be sprayed, and then 1500 times compound fertilizer can be applied every other week. In addition, Phalaenopsis is a fleshy root, in order to make its root system thick, the application of potash fertilizer is more important.
Fifth, pest control: in order to prevent the occurrence of diseases and insect pests, disinfect the greenhouse before entering the seedling, usually spray fungicides regularly, usually once a week, and choose sunny days as far as possible when spraying.
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The selection of Phalaenopsis
How to choose an ideal Phalaenopsis? Generally speaking, the leaves are bright in color, with thickness, many leaves, and neatly arranged leaves. It also depends on whether the leaves are stiff and upward, because only in this way can we show whether its vitality is exuberant. If possible, it is best to gently pull out the flower root to have a look, the root is fresh, or there are sprouting new roots, the vitality of this kind of flower is reassuring. Secondly, look at the flowers, first look at the number of flowers, Phalaenopsis is graded according to the number of flowers, the more flowers, the better. The bud is between 8 and 11.
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Flowering technique of Phalaenopsis
In order to provide Phalaenopsis potted flowers to the market during New Year's Day and Spring Festival, Shandong Rizhao City Garden Bureau and Rizhao Agricultural High-tech demonstration Park conducted a three-year research on Phalaenopsis flowering technology, and systematically summed up a set of technical regulations. The production facility adopts the improved solar greenhouse, which is equipped with necessary temperature and humidity control equipment such as fan coil heating, fan wet curtain and external shading, cooling and humidification. Technical measures temperature control (1) Day and night temperature: during vegetative growth, the day temperature is controlled between 26 ℃ and 28 ℃.
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