Scientific management method for fertilization in winter orangery
October 12 23:03:03, 2018
At present, the amount of organic fertilizer input in the southern orangery is insufficient, the acidification of the soil is serious, the amount of fertilizer used by farmers is quite different, the proportion of fertilization and the period of distribution are unreasonable, and the problem of lack of medium and trace elements is widespread. Recently, the Ministry of Agriculture issued scientific guidance on fertilization to help farmers manage the autumn and winter orangery.
The principle of fertilization pays attention to the application of organic fertilizer, vigorously develops green manure in orchard; applies appropriate amount of lime to improve soil; optimizes the reasonable application rate and period of NPK fertilizer, pays attention to the application of fruit harvesting fertilizer in autumn; and appropriately supplements trace elements.
Fertilization recommends more than 3,000 kg of orchard per mu: organic fertilizer 2~4 square/mu, nitrogen fertilizer 25~35 kg/mu, phosphate fertilizer 8~12 kg/mu, potash fertilizer 20~30 kg/mu.
Orchard 1500~3000kg orchard: organic fertilizer 2~4 square/mu, nitrogen fertilizer 20~30kg/mu, phosphate fertilizer 8~10kg/mu, potash fertilizer 15~25kg/mu.
Orchard with an output of 1500 kg or less: organic fertilizer 2~4 square/mu, nitrogen fertilizer 15~25 kg/mu, phosphate fertilizer 6~8 kg/mu, potash fertilizer 10~20 kg/mu.
Fertilizer operation in autumn and winter fertilization (harvesting fruit fertilizer): 20%~30% nitrogen fertilizer, 40%~50% phosphate fertilizer, 20%~30% potash fertilizer, all organic fertilizer applied before and after fruit harvesting from November to December; spring fertilization ( Flower fertilizer: 30%~40% nitrogen fertilizer, 30%~40% phosphate fertilizer, 20%~30% potash fertilizer applied before flowering in February~3; summer fertilization (strong fruit fertilizer): 30%~40% nitrogen fertilizer, 20% to 30% of phosphate fertilizer and 40% to 50% of potassium fertilizer are applied from June to July. Phosphate fertilizer is preferred for calcium magnesium phosphate or superphosphate. The orchard with boron and zinc deficiency in the soil is applied with 0.5~0.75 kg of borax and 1~1.5 kg of zinc sulfate per mu. It is mixed with organic fertilizer and used in autumn. For orchard with pH<5.5, apply lime or dolomite powder per acre 60~80 Kilograms, 50% applied in the fall, 50% in the summer.
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