Method for controlling crown growth of peach tree by using inter stocks

Abstract

The invention discloses a method for controlling the crown growth of a peach tree by using inter stocks, which comprises the following steps: A, selecting and cultivating stock seedlings; B, selecting inter stocks; C, grafting and managing the inter stocks; D, grafting and managing cultivars; E, carrying out field planting and orchard establishing: the field planting is performed according to the requirements for orchard establishing of mature or young peach seedlings, and when planting, the lower graft union of the inter stock is exposed above ground; and F, carrying out final-period management: if the cultivated inter stock seedlings are mature seedlings, trunk cutting is carried out directly according the requirements for peach cultivation, and if the inter stock seedlings are young seedlings, the pinching and trunk cutting are carried out after the germination of scion buds; offshoots on rootstocks and the inter stocks are removed timely, and other fertilizer managements and insect and disease controls are same as those after a peach seeding orchard is established. The method of the invention is simple and easy to perform and convenient to operate, promotes the formation of blossom buds on the branches of the peach tree, improves the fruit-setting rate and the fruit quality of the peach tree, solves the key technical problem of controlling the crown growth of the peach tree, and overcomes the defects caused by usually using chemical inhibitors.

Description

technical field [0001] The invention relates to the field of horticultural fruit tree cultivation, and more specifically relates to a method for controlling the growth of peach tree crowns by an intermediate stock. Background technique [0002] Peach is native to my country and is one of the oldest fruit trees, with a cultivation history of more than 4,000 years (Wang Zuhua, Zhuang Enji. Chinese Fruit Trees. Peach Juan. Beijing: China Forestry Press, 2001, 1-8). The world's largest peach producer. Peach fruit is not only beautiful in appearance, delicious and juicy, but also rich in nutrition, so it is widely planted. With the continuous development of productivity and the improvement of people's living standards, the requirements for early fruit, high yield, high quality, low consumption, high efficiency, easy operation, and mechanized fruit production have made people change the cultivation mode of peaches from sparse planting to dwarf dense planting. , dwarfing and dense...

AI Technical Summary

Problems solved by technology

However, the use of growth inhibitors not only increases the production cost and labor, but also does not meet the production requirements of green food, and the side effects of PP333 are relatively large: ①The fruit becomes astringent, and the sugar content decreases, which affects the edible quality;② The background color of the fruit is green, the shape of the fruit is flat, which affects the appearance quality and reduces the commodity value; ③ PP333 remains in the fruit, and even pollutes the soil, which is harmful to the human body and does not meet the requirements of pollution-free fruit production. Requirements; (Ning Anzhong, Sun Wanbao. Peach trees are not easy to use paclobutrazol. Hebei Guoshu, 2004 (2): 41)

In addition, some people have also mentioned the dwarfing test of the middle stock of peaches (Zhang Zhonghui, Wang Chengjun, the test method of dwarfing the middle stock of peaches with cherries, Northern Fruit Trees, 1997 (4): 11), but we use cherries, plums, etc. Repeating the corresponding test as an intermediate rootstock shows that in the early stage (within 1 to 3 years), there is indeed a good effect of controlling the canopy, but in the later stage (after 3 years), there are serious incompatibility phenomena. Can't apply

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