Method for rotation renewing of Or mandarin shading garden

Abstract

The invention discloses a method for rotation renewing of an Or mandarin shading garden. The method comprises the operating steps: (1) carrying out alternate-row heavy retractive pruning till trees are retracted to skeleton branches after fruit ripening and harvesting in the same year; (2) after germination and leaf expansion of spring shoots, selectively reserving 3-4 uniformly-distributed robustbud sticks of different azimuths; (3) carrying out tip pruning and topping-off after the spring shoots are aged, selectively reserving 2-3 robust early summer shoots of different azimuths on each spring shoot, and culturing later summer shoots by the same method; (4) carrying out tip pruning when later summer shoots are 80% aged, and promoting autumn shoots by the same method so as to culture well-fruiting mother branches; (5) carrying out bending and pulling treatment on excessively-grown or erect branches of shoots per batch to inhibit excessive growth; and (6) spraying paclobutrazol to leaf surfaces to promote blossoming when autumn shoots grow to about 90% of ripeness. According to the method disclosed by the invention, rotation renewing and fruiting of the Or mandarin shading gardencan be achieved, and meanwhile, the aim of maintaining the ventilating, light transmitting, stable yield and high quality of the garden is achieved; and loss of yield caused by permanent intermediatefelling or whole-garden renewing can be avoided.

Description

technical field [0001] The invention relates to the technical field of transformation of citrus shade gardens, in particular to a technical method for the rotation renewal of citrus shade gardens. Background technique [0002] Wo citrus is a hybrid citrus fruit tree with large branch growth, early fruiting and high yield. The commonly used planting density in production is 83-110 plants / mu. Due to the high market price and good economic benefits of citrus in recent years, growers have invested heavily in fertilizers. Generally, the branches can be closed in the second year of fruiting. In the third year of fruiting, most orchards begin to be shaded, which affects ventilation and light transmission. Because citrus is susceptible to canker, and there are long and hard thorns on the branches, the plants are closed and shaded. It is inconvenient for field management, coupled with the current lack of rural labor force, it is difficult to implement whole garden pruning, which is ...

AI Technical Summary

Problems solved by technology

Generally, the branches can be closed in the second year of fruiting. In the third year of fruiting, most orchards begin to be shaded, which affects ventilation and light transmission. Because citrus is susceptible to canker, and there are long and hard thorns on the branches, the plants are closed and shaded. Inconvenient field management, coupled with the current lack of rural labor force, it is difficult to implement whole garden pruning, which is likely to cause rapid decline of trees, breeding of diseases and insect pests, low or no yield, and poor quality

[0003] In addition, due to the serious hazards of citrus huanglongbing disease and viral diseases, and the phenomenon that citrus is prone to large and small annual fruits, premature and permanent thinning will have a great impact on yield, which is difficult for growers to accept.

Images