Slow-release compound fertilizer special for serotinous mandarin orange

Abstract

The invention relates to a slow-release compound fertilizer special for serotinous mandarin orange. The slow-release compound fertilizer is divided into A-type fertilizer, B-type fertilizer and C-type fertilizer and contains nitrogen, phosphorus, kalium, sulphur, calcium, magnesium, boron, zinc, iron and other nutrients, wherein the total amount of nitrogen, phosphorus and kalium is more than or equal to 30 percent; the amount of organic matter is more than or equal to 15 percent; the organic nutrients and the inorganic nutrients are reasonably matched and can meet the requirements of different growth and development stages of the serotinous mandarin orange and final excellent quality and high yield of fruits. The slow-release compound fertilizer has long nutrient release period and prolongs the release time by more than 60 days compared with a chemical fertilizer, is in particular suitable to be applied in the serotinous mandarin orange, can improve a soil structure and greatly increase the utilization rate of the fertilizer. The slow-release compound fertilizer has wide source of adopted raw materials, simple product manufacturing process and little equipment investment.

Description

technical field [0001] The invention relates to the technical field of agricultural fertilizers, in particular to a special slow-release compound fertilizer for late-maturing citrus. Background technique [0002] At present, the middle-maturing varieties of citrus in our country are 75% mature in November-December, the early-maturing varieties listed in September-October account for 20%, and the late-maturing varieties after December only account for about 5%. Gap for homegrown citrus. Therefore, the shortage of late-maturing varieties of citrus that can be listed on a staggered peak is an important problem that my country's citrus industry has faced for a long time and needs to be solved urgently. [0003] Citrus is an evergreen fruit tree, which shoots out many times a year, has a long growth period, produces a large amount of fruit, and requires a large amount of fertilizer. The total amount of fertilizer required is equivalent to about twice that of deciduous fruit tree...

AI Technical Summary

Problems solved by technology

For a long time, citrus planting has been using the traditional phosphate fertilizer, common compound fertilizer and a small amount of urea combined with multiple applications, and insufficient attention has been paid to the balance of nutrients and the harmlessness of fertilizer quality.

Late-maturing citrus is an important reason for the difficulty in the development of late-maturing citrus due to backward cultivation and management technology, especially the problem of nutrient supply imbalance in winter.

At present, there is no pollution-free and long-acting special compound fertilizer suitable for the growth characteristics of late-maturing citrus and improving the nutritional quality in the domestic market.