How to dwarf the cultivated vegetable Toona sinensis with high price or low price

The varieties of Chinese toon for vegetable use should be selected, such as "red oil Chinese toon","red bud green Chinese toon" and "red fragrance No.1". These varieties of Chinese toon sprout early, low temperature resistance, bud stem and tender leaves brown red, leaves crisp and juicy, sweet taste, strong fragrance.

Toona sinensis seedlings

Seedling sowing: preparing soil in March, making bed width of 1.5 meters, soaking Chinese toon seeds in warm water of 30-35 DEG C for 24 hours, and placing in environment of about 25 DEG C for germination. After germination, sowing, the amount of seed used per mu is about 1.5kg. After sowing, cover soil, irrigate enough water, and cover plastic film or straw, keep warm and moist. After emergence, the mulch is removed. 3-4 2-3 leaves per month, plant spacing of about 15cm, another bed between seedlings. 5-6 Loosening, weeding and fertilization are carried out monthly, nitrogen fertilizer is mainly applied from July to August, phosphorus and potassium fertilizer are applied in combination, and loosening and weeding are combined.

Timely planting: should choose loose soil, deep soil layer, sandy, irrigation convenient place to build Chinese toon garden. After deep ploughing, apply 5-7 tons of decomposed organic fertilizer per mu. Toona sinensis is planted before defoliation to germination, autumn planting and spring planting. Generally, the planting density is 40cm×50cm, and about 3000 plants are planted per mu. Deep planting, root system expansion, fill compaction, watering 1-2 times.

Dwarfing and shaping: If the planting Chinese toon is not dwarfing and shaping, it should be cut off, that is, cutting off the top at 15-20cm of the seedling stem, promoting the development of 2-3 lateral branches at the lower part, and making first-class lateral branches. When the first-order lateral branches grow to more than 30cm, cut off the top shoots, keep 5-10cm branch piles, and promote the second-order lateral branches.

Dwarfing treatments include topping, cutting and stubble leveling. 6-7 In September, the annual branches are cut short or picked, the trunk is kept at 15--2-5cm, 2-5 lateral branches can be drawn in about 20 days, and short branches of 10- 15cm can be grown in autumn, and Chinese toon buds can be collected in the following year. To grow too flourishing Chinese toon or branch, can pick a heart again. Topping and shortening can increase bud quantity and yield by 1.5-2 times.

Field management: after planting, irrigate once permeable water, and then irrigate once every half month. Soil is kept wet and dry. Watering or after rain, timely intertill weeding to prevent ponding. 4-5 Apply topdressing once each month and July, applying 10- 15kg urea per mu each time; apply nitrogen fertilizer again after August, and control watering; apply calcium superphosphate once in September, applying 50- 60kg per mu to promote Chinese toon lignification and increase cold resistance. In late February, mulch the roots of mature trees to promote early germination. 3-5 days before the first harvest, apply 20-25 kg urea per mu, when the new shoots grow to 30cm, apply fertilizer outside the roots, spray 0.2- 0.3% urea or potassium dihydrogen phosphate solution 2-3 times, alternately use. 6-7 Month, after a large number of picking, topdressing should be 2-3 times, 20-25 kg compound fertilizer per mu. After defoliation, combine deep ploughing, apply decomposed organic fertilizer.

Toona sinensis has strong disease resistance and few diseases and insect pests, mainly leaf rust, root rot, spotted wax cicada, etc. Agricultural control should be given priority to, supplemented by targeted drug control.