1. Deeply plough the soil, apply enough base tonic, scent, warmth, and fear of chilliness. The ground is afraid of frost, should choose high terrain, drainage conditions, soil fertile sandy loam planting, too sticky soil, saline land is not suitable for planting. Because Xiangxi prefers loose and fertile soil, so it is necessary to turn frozen soil about 30 cm in winter and ripen the soil before winter. To make a one-time application of basal fertiliser, basal fertilisers generally use organic fertilizer in combination with winter turning before winter. Basal fertilization applies 1600 kg of organic fertilizer or 80 kg of cake fertilizer per mu, which promotes the development of roots and the formation of roots. Second, timely early sowing, reasonable dense planting citron sub-skin and rough two categories, the former the quality of fine flavor, the latter fast growth, high yield. Local selection of round, 1.5 cm diameter, no worms, smooth skin, skin yellow, buds clear eyelids complete fine pods as a thoroughbred, suitable for germination before sowing, when the bud length 1 ~ 1.5 cm, in mid-February sowing. When sowing, a combination of 135 to 155 cm, the density of about 5200 per acre is appropriate, spacing 55 to 60 cm, about 25 cm spacing, sowing ditch depth of about 8 cm, 700 kg of fertilizer applied per acre sowing, Shi In the sowing ditch, the manure will dry down and cover the soil. Each cull will have a small ridge height of about 6 centimeters to facilitate drainage. Then it will be covered with a plastic film, covered with a small arch shed, and insulated to prevent early spring frost. Third, timely scaffolding When The Potato shoots bud membrane ruptured seedlings, and sealed with holes in soil, in order to facilitate insulation moisturizing, when the potato seedlings grow to 1 cm long (about mid-May) uncover a small arch, while taking shed. Use 10 to 12 roots to form a small tower, 160 cm high for climbing. The scaffolding must be firm to prevent the wind from falling down. Fourth, to strengthen the roots of fertilizer and water, light stems, stem should be fertilized water, in the early stage of emergence, the application of Miao Fei, thin manure is appropriate; seedlings 33 cm high when the seedling fertilizer, applying 20% ​​of manure per acre 600 kg of urine fertilizer; when the stems and leaves in the middle and late June are full, 30% of manure and urea fertilizer is applied per mu; 1,000 kg; the middle and late July is the critical period for the growth of Toona sinensis, and under the general conditions, the small heat and the great heat are applied once. Organic manure, dominated by human and animal manure, should be applied at a rate of about 1,000 kilograms per mu. Applying human and animal manure at this time is not only beneficial to the nutrients needed for the growth of the tubers, but also prevents the early growth of the cells. V. Prevention and Control of Diseases and Insect Pests Pollution-free Toona sinensis Pest Control Principles: Adhere to prevention as the main comprehensive prevention and control, based on agricultural prevention and control, using natural enemies and biological control, and limit the use of pesticides that meet national Grade A green food production. Botrytis cinerea drug control method is in the early stage of the disease, sprayed with 25% carbendazim WP. Too much pests and diseases occur in the whole life of Toona sinensis. Before and after the small to very hot summer days, in case of drought in the past days, the use of pesticides should be controlled in time according to the occurrence of pests and diseases. This is mainly to prevent and control the damage of red spiders to the leaves. At the same time, we must timely cultivating and weeding to prevent the grass from squeezing the seedlings and competing for fertilizer, which will affect the normal growth of the potato block. 6. On-time excavation and storage Timber-pit excavation period is generally suitable from early November to mid-December. Generally, glutinous rice cultivars cultivated in open field will produce about 650 kilograms of yam per acre. The production will be increased by 15% with mulching. ~20%. Toona sinensis is shelf-resistant and can be stored in the room after being unearthed. As long as it maintains a certain temperature, it does not dehydrate and dry, and it can be rotted and deteriorated for a long time.
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