Soilless cultivation system Calla lily soilless cultivation system is mainly composed of planting tank, drip irrigation system, nutrient solution pool, water pump and liquid supply timer. The planting tank can be made of bricks, the width of the groove frame is 80 cm and the height is 20 cm. The length of the planting tank is determined by the actual length of the greenhouse.
, generally not more than 30 to 40 cm. The tank is first covered with a plastic film to isolate the soil and then placed in a 15 to 18 cm thick matrix. The soilless culture medium suitable for cut flowers Calla Lilies is rice husk ash, sawdust 31 or a mixture of perlite and sawdust matrix 21 matrix. The drip irrigation system can use in-built drip irrigation belts with outlet holes of 10 cm or 20 cm and two rows per planting trough. The volume of the nutrient pool is generally 1 to 2 cubic meters. The pump selection depends on the working pressure and quantity of the drip irrigation belt. In general, three greenhouses can be supplied with a submersible pump with a power of 450 watts.
Planting soilless cultivation calla lily can be planted in late August. The healthy, disease-free and uniform-sized bulbs were selected and planted in planting troughs at 15 cm spacing. Consistently sized bulbs with a spacing of 40 cm and seed bulbs with a depth of 3 to 4 cm. After colonization, two drip irrigation strips were placed on the outside of the bulb.
Nutrient Solution Management The waterless soil nutrient solution of calla lily can use the following nutrient solution: 800 g of calcium nitrate, 210 g of potassium dihydrogen phosphate, 250 g of magnesium sulfate, 500 g of potassium nitrate, 30 g of ammonium nitrate, ethylenediaminetetraacetic acid Iron salt 10 g, manganese sulfate 2 g, zinc sulfate 1 g, boric acid 1.3 g, copper sulfate 0.15 g, ammonium molybdate 0.1 g. During the entire growth period, the pH of the nutrient solution was adjusted to 5.6 to 6.5. The supply of nutrient solution depends on the weather conditions and the size of the plant. Generally, the supply of fluid is 2 to 3 times a day to ensure that the cultivated substrate is moist and there is a shallow water layer at the bottom of the tank.
Plant management and pest control A calla plant is relatively simple to manage. It is mainly to remove the yellow leaves and part of the outer leaves. The purpose of peeling off the leaves is to avoid the crowded blades affecting the lighting and ventilation, and prevent the peduncle from sticking out. The pests and diseases of calla lily mainly include bacterial soft rot, aphids, and red spiders. Bacterial soft rot can harm leaves, petioles and tubers, mainly transmitted by tubers, and Bordeaux's solution can be sprayed with 500 times the initial control.
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