Method and maintenance management of hydroponic calla lotus
1. Hydroponic varieties
Hydroponic calla lilies usually choose short and compact white stalk species, safflower calla lilies and honeysuckle calla lilies.
Calla lily: maintenance and management of calla lotus bonsai
2. Hydroponic solution
The nutrient solution of calla lily hydroponics can be formulated as follows: calcium nitrate 800g, potassium dihydrogen phosphate 210g, magnesium sulfate 250g, potassium nitrate 500g, ammonium nitrate 30g, ferric ethylenediamine tetraacetate 10g, manganese sulfate 2g, zinc sulfate 1g, boric acid 1.3g, copper sulfate 0.15g, ammonium molybdate 0.1g. In the early growth stage, the concentration of nutrient solution can be controlled at 1.2ms / cm, and the concentration of nutrient solution can be appropriately increased to 1.5ms/cm in the middle and later stage of growth. The supply of nutrient solution is mainly determined according to the weather conditions and plant size, usually 2-3 times a day to ensure that the culture substrate layer is moist, and there is a shallow water layer at the bottom of the tank.
3. Hydroponic culture management and pest control
The plant management of calla is relatively simple, mainly peeling off yellow leaves and some outer leaves. The purpose of stripping the outer leaves is to prevent leaf crowding from affecting daylighting and ventilation, and pedicels protruding. The main diseases and insect pests of calla lilies are bacterial soft rot, aphids, red spiders and so on. Bacterial soft rot can harm leaves, petioles and tubers, which is mainly transmitted by tubers. Bordeaux solution can be used to control the disease at the beginning of the disease.
4. Key points of hydroponics
Water culture of calla lily is essentially anoxic cultivation, so it is necessary to achieve zero pollution. Because if the nutrient solution is polluted by organic matter, under the action of microorganisms, the oxidation of these organic pollutants requires the consumption of dissolved oxygen in the water. When the pollution is more serious, the oxidation process is very fast, and the nutrient solution can not absorb enough oxygen from the air to supplement the oxygen consumption, the dissolved oxygen in the water will gradually reduce, or even close to zero. At this time, the anaerobic bacteria multiply and become active, making the organic pollutants in the water decompose anaerobically. This decomposition will produce hydrogen sulfide, ammonia and other bad gases and give off a bad smell. Therefore, always maintain the clean state and inorganic properties of the nutrient solution, in order to maintain the necessary level of dissolved oxygen in the solution, is the key to hydroponic calla.
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