Fertilization method for citrus

Abstract

The invention discloses a fertilization method for citrus. The method comprises the following steps: 1) performing deep ploughing and performing fertilization: after citrus fruit is picked, digging ditches with width and depth of 0.8m x 1.0m in the middle of each two adjacent field planting rows in a citrus orchard, packing mellow soil ditched out at a position with a distance 20-30cm far away from the ground surface into the ditches as bottom layers, when the depth of the packed soil is 20-30cm, spreading hay, wherein the usage amount of the hay in each mu of the orchard is 400-600kg, when the hay is spread to a position with a distance 15-30cm far away from the ground surface, applying an organic fertilizer, wherein the usage amount of the organic fertilizer in each mu of the orchard is200-300kg, continuing to apply a phosphate fertilizer, wherein the usage amount of the phosphate fertilizer in each mu of the orchard is 40-60kg, and finally covering the ditches with excavated raw soil; 2) performing fertilization in the budding stage; 3) performing fertilization in the young-fruit developing period; 4) performing fertilization in the young-fruit expanding period; 5) performing fertilization after fruiting occurs and before fruits are ripe; and 6) performing fertilization after harvesting is performed. According to the method provided by the invention, through deep ploughingand fertilization in a planting land, and planting land treatment of arranging a mellow soil layer, a hay layer, an organic fertilizer layer, a phosphate fertilizer layer and a raw soil layer in sequence from the bottom to the top in the middle soil of each two adjacent field planting rows of the citrus orchard, the fertilizer efficiency and soil environment of the citrus planting land are effectively improved, and the optimum cultivation environment for the citrus is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of fruit tree planting, and in particular relates to a citrus fertilization method. Background technique [0002] Citrus belongs to the Rutaceae Citrus subfamily, which is a tropical and subtropical evergreen fruit tree (except Hovenia trifoliate). Because citrus is delicious, sweet and rich in nutrients, it is deeply loved by people. Because citrus is a perennial variety, it generally prospers continuously for 2-4 years after it is put into production. Due to the limitation of land resources and cultivation conditions, there are generally obstacles to apple continuous cropping in citrus main producing areas. Some researchers have shown that under continuous cropping conditions, the soil Decreased fertility, citrus fruit quality and yield decline, this problem has become a bottleneck for orchard renewal and sustainable development of citrus industry. [0003] Soil organic matter is an important material bas...

AI Technical Summary

Problems solved by technology

However, at present, chemical fertilizers such as quick-acting chemical fertilizers or urea are generally used as the main fertilizers in the citrus planting process. The chemical fertilizers have a single nutrient component and cause great environmental pollution, resulting in low disease resistance of fruit trees, small fruit, dull fruit, and poor taste. Even unsalable, which directly affects economic benefits, and excessive use of chemical fertilizers can easily cause soil compaction, damage the growth of citrus trees, and affect the fruit and taste of citrus; the use of organic fertilizers will not cause the problem of using chemical fertilizers, but the mainstream ones on the market Organic fertilizers generally have the problem of uneven fertility, rotten roots appear after application, and some organic fertilizers also have excessive heavy metals

[0004] The study found that after 2-4 years of planting citrus in citrus orchards, the soil stability of the orchard decreases, the elements required by citrus trees decrease greatly, and the elements that do not require a large amount accumulate, resulting in changes in soil structure and poor air permeability of the soil; application The Chinese patent application No. "201610187249.7" discloses a planting method for tangerines. The steps include: deep plowing and fertilization; after December every year, dig holes around the canopy of tangerines with a width and depth of 0.6×0.5 , apply fertilizer, and described fertilizer kind comprises potash fertilizer, nitrogenous fertilizer, phosphorus fertilizer, organic fertilizer, and wherein organic fertilizer is that chicken excrement and peanut bran are mixed according to the weight ratio of 1:1; The effect needs to be further improved, and the use of organic fertilizer has a single nutrient component, which is not good for the improvement of the fertility required for fruit tree growth