What to Do When the Roots of四季 crabapple Rot
As a common ornamental flower, the health of the roots of 四季 crabapple directly affects the survival of the plant. It is crucial to take timely and correct measures when signs of root rot, such as withered leaves and a bad smell in the potting soil, are detected. This article will systematically analyze four core treatment plans, from environmental regulation to root repair.
Ⅰ. Soil Environment Improvement Plan
1.1 Optimization of Substrate Permeability
A mixture of humus soil, perlite, and river sand in a ratio of 4:3:3 can form an ideal substrate structure. Loosen the soil with a bamboo stick 2-3 times a month, reaching 2/3 of the depth of the container, to ensure smooth root respiration. It is recommended to supplement with 5% pine bark every half year to enhance drainage.
1.2 pH Adjustment
Regularly test the soil pH value. When it is below 5.8, add 0.5g of slaked lime to every liter of water to neutralize; if it is above 6.5, use a ferrous sulfate solution to adjust. Maintaining a pH value between 6.0-6.5 is most beneficial for root development.
Ⅱ. Nutrient Management Standards
Apply a diluted balanced water-soluble fertilizer (1500 times) every month during the growing season, and stop fertilizing in winter. If fertilizer damage occurs, immediately rinse the substrate 3-5 times with the immersion pot method or replace the top 5cm of soil. It is recommended to use EM bacteria agents to promote nutrient absorption.
Ⅲ. Accurate Water Control
3.1 Quantitative Standards for Watering
Keep the substrate moisture at 40%-60% in spring and autumn, increase it to 60%-70% in summer, and reduce it to 30% in winter. Use the "dry-wet" principle, and use a moisture meter for more precise control. When water accumulates, tilt the pot 45 degrees to accelerate drainage.
3.2 Techniques for Supplementing Water on the Leaves
Spray water before 10 am daily during the high-temperature season, using a 0.1% potassium dihydrogen phosphate solution to enhance leaf resistance. Avoid the strong sunlight period at noon to prevent leaf burn.
Ⅳ. Root Regeneration Treatment Process
Keep 1/3 of the healthy roots when pruning and soak in a 1000-fold potassium permanganate solution for 20 minutes. After transplanting, keep the bag moist for 2 weeks and gradually increase the ventilation time. For severely rotted roots, cut an 8cm healthy stem segment and promote roots in an indolebutyric acid solution for 15 days.
Through systematic environmental control and scientific treatment, 80% of the 四季 crabapple with root rot can recover vitality. It is recommended to conduct root health checks monthly in daily maintenance, detect and treat early, and adjust the maintenance plan according to the season to keep the crabapple plants vigorous and full of life.