The task of the management of the Orangery in the autumn is to adopt targeted technical measures to ensure the quality and yield of the fruit according to the growth and development of the tree and the weather. At the same time, it maintains a good tree vigor and lays a good foundation for high yields and stable production in the following year. In the citrus production area, the following aspects should mainly be done.
Drainage against stains is rainy in autumn, which often causes rot. It is critical to do a good job of irrigation and drainage systems in orange groves. A "three ditch" should be opened, that is, there is a middle ditch between the rows, a ditch around the perimeter of the park, and a drainage ditch outside the park.
Covered sugar In order to increase the content of soluble solids in fruits and improve the flavor and storage of fruits, reflective film can be laid before harvesting fruit.
The general principle of timely harvesting and harvesting is “timely non-destructive†and the method of harvesting should be strictly followed by the “double shear methodâ€. That is, the shearing force of the first shearing distance is more than one centimeter; the second shearing force is cut and flattened. When harvesting, avoid mechanical damage and rain.
The fruit fertilizer of early Shichao fruit is mainly to restore the tree vigor, improve the cold resistance of the tree, and store nutrients for the spring shoots and flowering results of the following year. Early maturing varieties can be applied 7 to 10 days after harvesting. Mid-maturing varieties can be applied side by side while late-maturing varieties should be applied 7 to 10 days before harvesting. Fertilizer should be dominated by organic fertilizers, with the application of phosphate fertilizer, nitrogen fertilizer or compound fertilizer, etc., fertilizers account for more than 45% of the whole year, nitrogen application amount accounted for more than 40% of the total nitrogen application throughout the year, the specific amount of fertilizer Should be based on the age of the tree and the amount of fruit.
Fall planting gardens are usually planted in early September to late October. The park should be scientifically planned, select suitable varieties, strictly control the quality of seedlings, improve the soil, and promote ridge cultivation. Divide a drainage ditch with a width of 0.7 to 1 m, a bottom width of 0.2 to 0.3 m, and a depth of 0.8 to 1 m at intervals of 9 to 9.3 m to form a planting mound with a width of about 9 m. Citrus 2 lines, spacing of 2 to 3 meters.
Immediately after clearing the fruit in the clear garden, the orchard should be cleaned once, the dead and the dead branches of the pests should be cut off, the old skin of the trunk should be scraped off, and the branches, leaves and weeds in the garden should be cleared out of the garden to reduce the base number of overwintering pests and diseases. Spray 1 to 2 times as soon as possible, focusing on the prevention and treatment of anthrax, resin and red, yellow spider.
Cold and Frost Resistant: Take southern Shaanxi as an example. Southern Shaanxi is situated on the northernmost edge of citrus production in China. Citrus's cold and frost-free measures should be used as a routine management measure. Although there are many antifreeze measures, the most fundamental point is to increase the tree potential. In general, before the onset of the cold wave, the trunk is wrapped with straw, which can play a good antifreeze effect. In addition, the trunk whitening can also be a good antifreeze.
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