Day lily early spring management and cultivation

1. Induced spring seedlings to cultivate once in the rows before the emergence of the spring, reaching a depth of more than 13 centimeters. Shallow ploughing 6-7 cm between the rows before bolting, combined with the application of vinegar. In the harvest season chase bud fertilizer. Each top dressing is made of quick-acting NPK fertilizer. If drought occurs during bolting, water should be promptly poured to prevent falling flowers. To prevent falling buds, spray 1ppm2.4-D liquid.

2, timely control of pests and diseases (1) leaf spot, leaf blight: spray the same amount of 0.5-0.6% Bordeaux mixture, add water 500-600 times, 65% or 80% wetability agent Senzin water 700-800 times, back Special 50% wettable powder 500-1000 times water, spray once every 7-10 days. Avoid spraying buds season to avoid pesticide residues. The standard for control of sulfur dioxide in lily must not exceed 200 mg/kg. (2) Root rot: The diseased plants were found to be removed, and then sprinkled with lime powder or sulfur lime powder (0.5 kg of sulfur, 2.5 kg of quicklime, grind thoroughly) to spread on the soil surface around the diseased plants to prevent spread. (3) Red spider: use lime sulfur, dimethoate, etc.

3, timely harvest when the bud close to open the fastest growing, timely picking. Forced early dormancy, prolonged dormancy, elongated fresh product supply period. Late flower buds have been opened, anthers have been broken, pollen has been dispersed, and the quality of dried products has been reduced. The storage and transportation process is also vulnerable to insects. Day lily flowering time is mostly late in the evening, and must be picked up 1-2 hours before flower opening.

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