Strengthen Li Shu's early summer management to ensure plum quality and high yield

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Li is a fruit tree with good yield and disease resistance. Due to poor management in early summer, it often appears serious in size, small in size, and lacks in quality. In the fruit period, Li Shu is dominated by short fruit branches and bouquet-like fruit branches. The current plum fruit is in the period of fruit enlargement. In order to enlarge the fruit, ensure uniform fruit size, improve fruit quality, prevent the size of the year, we should strengthen the fertilizer, water, fruit thinning Management of pests and diseases in three aspects.

Plum fruit needs a lot of nutrients and water to promote fruit development during the fruit enlargement period. For mature trees with strong tree vigor, one strong fruit fertilizer should be applied at the beginning of May, and for trees with weaker tree vigor, one additional fertilizer should be added. The top-dressing fertilizer should be made of compound fertilizer with higher potassium content and plant ash. Gully application, ditch depth 10cm, ditch width 15cm, apply 1.0 to 1.5 kg of compound fertilizer per plant, timely cover soil after fertilization. In case of drought, young fruit should be irrigated during the expansion period.

After fruiting is completed, fruit thinning should be performed. At this time, the fruit size is obvious. Firstly, small fruits, secret fruits, pods, and diseased fruits should be removed. The distance between the fruits should be determined according to the size of the fruit shape so as not to influence each other. , On the fruit branch, one fruit is kept every 5-8 cm, and the yield per mu is controlled between 1000 and 1500 kg.

The gum disease is a common disease on the plum tree, and peaks occur from May to August of the year. To increase orchard drainage, increase organic fertilizers, increase tree disease resistance, prevent and treat trunk diseases and insect pests in time, reduce disease and insect injury, scrape fluids, and then apply 5 Baume degree lime sulfur Finally, the protective agent has a good effect. At the same time strengthen the control of Tianniu, if found in the main stem larval excretion hole, it should be immediately included.

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