Introduction and cultivation of a New BlackBerry Variety Baosen

Baosen is a BlackBerry variety introduced from the United States, which was introduced by the Institute of Botany, Chinese Academy of Sciences in Jiangsu Province in 2001, showing the characteristics of strong adaptability, early maturity and good flavor. The introduction and cultivation techniques of Baosen in Nanjing are introduced as follows.

Baosen is an early-maturing variety of large fruit type, with 116 ears per plant and 5 ears per ear, with an ear length of 9.8 cm, a width of 7.3 cm, a stalk length of 12.3 cm and a long round fruit, with a vertical diameter of 2.6 cm and a horizontal diameter of 2 cm. The mature fruit is purple-red, with a single fruit weight of 4.9 to 7 grams, a maximum fruit weight of 15 grams, a thousand-grain weight of 4.1 to 4.3 grams, and a fresh fruit yield of 4.35 kilograms in the high-yield period; the soluble solids content is 8.5% to 11.5%, sour, sweet and refreshing, and can be processed with fresh food; drought tolerance, waterlogging tolerance and low temperature of-15 ℃ can be tolerated; 8 mature fruits can be stored for 2 days at room temperature and 7 days at 4 ℃. The variety matured from the end of May to late June in Nanjing, and matured about 20 days earlier than Hull.

The park should be built in places with deep soil layer, far away from pollution sources and convenient transportation. Barren land, when ploughing, apply enough organic fertilizer to improve soil fertility. It is better to use rotten farm manure as the base fertilizer, with a dosage of 50008000 kg per mu, or 25% ternary compound fertilizer 40kg / mu. Before winter, dig planting holes or planting ditches according to the specifications of row spacing of 2 meters and plant spacing of 1.5 meters, and spread appropriate amount of straw at the bottom of planting holes or ditches. One-year-old cuttings or striped seedlings were selected before bud germination in early spring. Pour enough water to fix the root after planting.

Set up the frame after shaping and planting, and the fence type is better. The height of the frame is more than 2 meters, and about 66 frames are needed per mu, and 2 channels of 12 # 14 iron wires are pulled on the shelves. Lead the vine to the shelf in time during the growing period to prevent the branches from getting tangled up. In the first and middle of July, the dead branches were removed, the 2-year-old branches were cut off from the roots to clear the orchard, and the 1-year-old branches were tied up on the shelf. From early December to early February, cut off the branches with diseases and insect pests and frozen to death, thinned the weak branches and over-dense branches, and truncated the rest of the branches properly. Generally, each plant leaves 8 to 12 thick branches with a length of 1 to 1.5 meters, and is evenly tied to the support.

Fertilizer and water management looked at seedling topdressing for 3 times, mainly quick-acting fertilizer. The first application was nitrogen fertilizer when sprouting occurred in late March, the second application was nitrogen and phosphorus fertilizer or ternary compound fertilizer at the end of April, and the third application was compound fertilizer during flower bud differentiation in August. In winter, base fertilizer was applied at a distance of 60 cm from the plant, with a width and depth of 20 cm to 30 cm, and farm manure 1000 kg to 1300 kg per mu or 25% compound fertilizer to 40 kg to 50 kg. During the drought in summer and autumn, the orchards were irrigated every 10 days with the degree of soil moisture, and the orchards covered with water were irrigated every 20 days. Timely drainage in the rainy season, the garden can not accumulate water for a long time.

Spraying 3-5 Bomedo stone-sulfur mixture before bud germination to control diseases and stop using medicine 20 days before fruit picking in order to reduce pesticide residues in fruit and ensure fruit quality.