Excellent walnut varieties in China

   1, Liaoning No.1

Source and distribution of   : it was cultivated by Liaoning Economic Forestry Research Institute through artificial hybridization. It belongs to the variety type of early bearing walnut.

The economic character of    fruit: the nut is round and weighs 9.4g. The shell surface is smooth, the color is light and the shell thickness is 0. 5%. About nine millimeters. It is advisable to take the whole benevolence. The weight of nucleolus is 5. 6 grams and the kernel yield is 59. 5%. 6%. Lateral buds form mixed buds up to more than 90%.

   growth and fruiting habits: this variety has strong tree potential, erect or semi-open posture, strong branching power, extremely high yield, 2-3 female flowers per female inflorescence, fruit setting rate of more than 60%, belongs to male first type. Nuts are ripe in late September. The average nut yield of 5-year-old trees is 1.5 kg, the highest is 5. 1 kg, and the average nut yield of 4-year-old trees is 2. 5%. 1 kg. This variety has strong adaptability and cold tolerance, and is suitable for cultivation in the northern walnut cultivation area.

   2, Xiang Ling

Source and distribution of   : it was bred by Fruit Tree Institute of Shandong Province in 1978 with early fruiting superior line Shangsong 5 x Aksu 9. It passed the appraisal of the Ministry of Forestry in 1989. A few days ago, the provinces of North China and Northwest China are being introduced and cultivated. It belongs to the variety type of early bearing walnut.

   fruit economic characters: nut oval, medium-large, average single fruit weight 10.6g, maximum 13.2 g, average three-diameter 3.4 cm, smooth and beautiful, shell thickness 0. 5%. 99 mm, the suture is loose, the whole kernel can be taken, the kernel rate is 57.6%, the kernel color is light, the flavor is fragrant, the quality is high and so on.

   growth and fruiting habits: the plant grows moderately, the tree posture opens, the branch angle is about 70 °, and the crown is semicircular. The leaves are small, green, androgynous and mid-ripe. The variety has strong high yield, the fruit becomes smaller when the fertilizer and water is insufficient, and the tree potential is easy to weaken when the fruit is too much. Pay attention to increase the application of organic fertilizer, appropriate amount of load, prolong the life of the fruit. Cold resistance, drought resistance and disease resistance are poor, strict requirements for fertilizer and water conditions, drought, extensive management and so on will shorten the life span of the results.

   3, Daixiang

Source and distribution of   : Daixiang is a new walnut variety bred by artificial hybridization of X Xiangling, Liaohe No. 1. It was designated as the superior department in 1997 and was approved and named by the improved Forest Variety approval Committee of Shandong Province in 2003.

   fruit economic characters: nuts are large, oblong, vertical diameter 4.0cm, horizontal diameter 3.6cm, average single fruit weight 13.9g; shell smooth, suture tight, slightly convex, not easy to crack, shell thickness 1.0mm, easy to take whole kernel; nucleolus mass 8.1g, kernel yield 58.27%; nucleolus full, light color, fragrant, non-astringent, fat content 66.2%, protein content 20. 7%, good quality.

   growth and fruiting habits: the tree is strong, the crown is dense and compact. The branches are stout, the internodes are short (average 2.42 cm), and the branching force is strong (1: 4.3). The mixed bud fertilizer is large and full, with 2 to 4 female flowers per fruiting branch, more than 95% of lateral flower buds, more than double fruits and 3 fruits, and 70% fruit setting rate. Results the fruiting branch of the mother branch is short and many, and the fruit branch rate is 91.2%. It has strong continuous fruiting ability, high yield and stable yield. There are fewer male flowers. Male type, the fruit ripens at the beginning of September. The female florescence is close to the male florescence of Lufeng and Zhonglin 5 and can pollinate each other. It belongs to early fruiting type, flowering in the first year of planting, fruiting in the second year, and entering the high yield period in the fourth year. The tree body of this variety is dwarf, the tree shape should be small crown, sparse layer shape, close planting garden cultivation, strong stress resistance. When cultivated in mountainous areas with poor soil, fertilizer and water conditions, the growth rate is slow, which affects the early yield. The most suitable thickness of soil layer is more than 1.0 m, pH6. 3-8. 2 the development of walnut cultivation areas in the north.

   4, Wen 185

Source and distribution of   : selected by Xinjiang Academy of Forestry Sciences from Wensu thin shell variety group in Aksu area. It passed the appraisal of the Ministry of Forestry in 1989. It belongs to the variety type of early bearing walnut.

   fruit economic characters: the average single fruit weight is 11. 2g, the maximum is 14. 2g, the average diameter is 3.4cm, the shell surface is smooth and beautiful, the shell thickness is 1.09mm, occasionally there are nuts, the suture is loose, it is advisable to take the whole kernel, the kernel rate is 58.8%, the kernel color is light, the flavor is fragrant, the quality is high and so on.

   growth and fruiting habits: the plant growth is moderate, the tree posture is more open. The branch angle is about 65 °and the crown is semicircular. The leaves are large, dark green, female antecedent and precocious. The variety has strong continuous fruiting ability, high yield and good quality. It has strong adaptability, cold resistance, drought resistance and disease resistance. The crown is compact, which is suitable for dwarfing and dense planting, and pay attention to flower and fruit thinning to ensure high yield and nut quality in successive years. It requires good fertilizer and water conditions and likes to grow in loose soil. If the cultivation conditions are poor, the fruit will become smaller and the quality will decrease.