Longfeng black plum

Variety Name: Longfeng Black Plum (formerly known as Longfeng No.1) Breeding Unit: Ningde Longfeng Agricultural Technology Research Institute Variety Source: It was selected from the excellent single plant' Queen Black Plum' orchard in Longfeng Fruit Farm, Fu 'an City in 2004. Characteristics: This variety has a vertical tree posture, a small branching angle and a medium growth potential. It is planted in Gantang Town, Fu 'an City, with the initial flowering period in early March, the full flowering period in middle and late March, and the final flowering period in late March; The defoliation period is in the middle and late November. The fruit ripens in mid-July, and the fruit growth period is about 135 days, which is 5 ~ 7 days earlier than that of Queen Black Plum. All kinds of fruiting branches can bear fruit, with bouquetlike fruiting branches as the main ones. The fruit is oblate, with regular and tidy shape, thick fruit powder, purple-black peel, golden flesh, small and detached stone, single fruit weight of 60-75g, 7.5-9.5g larger than that of Queen Black Plum, soluble solids of 13.5%-16.0%, sweet and sour taste and excellent quality. Good fertility. Tested by Fujian Institute of Product Quality Inspection, the content of soluble solids is 13.0%, total soluble sugar is 7.8%, vitamin C is 5 mg/100g, and titratable acid is 1.1%. According to the field investigation of Ningde Plant Protection and Plant Inspection Station, the main pests and diseases of this variety are bacterial perforation, anthracnose, gummosis, aphid, mealybug and so on, and the occurrence of pests and diseases is similar to that of Queen Black Plum. Yield performance: After many years of trial planting in Ningde, Sanming and other places, the yield per mu of grafted seedlings can reach 1032 kg (40 plants per mu) after four years of planting. Key points of cultivation techniques: Peach is the best rootstock; Generally, 40 ~ 56 plants are planted per mu, and the pollination trees are arranged according to the ratio of 5 ~ 8: 1. The pollination trees are mainly' Misi Plum', and are matched with' Youmu Nai',' Qingmu Nai' and' Black Amber Plum'. Cultivate natural happy crown; Strengthen the management of fertilizer and water, pay attention to the rational application of phosphorus, potassium and boron fertilizers; Reasonable control of fruit yield, timely control of bacterial perforation, anthracnose, aphids, mealybugs and other pests and diseases. Opinions of the Provincial Crop Variety Examination and Approval Committee: Longfeng Black Plum is an early and middle-maturing black plum variety. Mature in mid-July in Gantang Town, Fu 'an; Higher output; Large fruit, sweet and sour taste, excellent quality; Suitable for planting black plum in Fujian Province. Peach should be used as rootstock in cultivation, and pollinated trees should be arranged at a ratio of 5 ~ 8: 1. The pollinated trees are mainly' Misili', and are matched with' Youmuqi',' Qingmuqi' and' Black Amber Plum', so as to prevent and control bacterial perforation, anthracnose, aphid, mealybug and other pests. After examination, it meets the requirements of crop variety examination (recognition) in Fujian Province, and has passed the recognition.
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