Slow-release organic compound fertilizer special for grapes and preparing method of slow-release organic compound fertilizer

Abstract

The invention discloses a slow-release organic compound fertilizer special for grapes. The slow-release organic compound fertilizer special for grapes is prepared from, by weight, 16-22 parts of an organic matter combined slow-release agent, 4.0-6.5 parts of a silicon fertilizer combined sustained and controlled release preparation, 18-23 parts of urea, 18-22 parts of diammonium phosphate, 26-30 parts of potassium sulfate, 0.5-1.5 parts of ferrous sulfate, 1.0-1.5 parts of magnesium sulfate, 1.0-1.5 parts of zinc sulfate and 1.6-2.0 parts of boric acid. The slow-release organic compound fertilizer has the advantages of being low in cost, high in concentration, complete in nutrition, high in utilization rate and the like, and further has the advantages of being remarkable in yield increasing and quality improving effect and the like; the slow-release organic compound fertilizer can be applied one time after grapes sprout in spring, multiple times of top dressing is not needed, the fertilizing frequency is reduced, and the harm caused by fertilizing to root systems is relieved; meanwhile, nutrition balance in grapes can be coordinated, growth can be promoted, and a remarkable effect is achieved on increasing the yield and improving the quality.

Description

technical field [0001] The invention belongs to the technical field of slow / controlled release fertilizers, in particular to a special slow-release organic compound fertilizer for grapes and a preparation method thereof. Background technique [0002] Grape is one of the fruit trees with high economic value. It can not only be eaten fresh but also used for wine making. With the adjustment of agricultural planting structure, the planting area has increased year by year. In 2013, the national grape planting area was 733,000 hectares, and the output was nearly 11.65 million tons. Ranked No. 1 in the world. With the increase of people's living standards, high-quality grapes are very popular in the market, and rational fertilization is an important factor to regulate yield and quality. Due to the high economic benefits of grapes, fruit farmers have relatively high investment, especially the large amount of fertilizer. At present, there are some problems in grape fertilization pr...

AI Technical Summary

Problems solved by technology

Grapes have a high demand for potassium. The amount of potassium absorbed per 100 kilograms of grape berries is 0.3-0.65 kilograms. Generally, the annual application of potassium fertilizer in high-yield vineyards is 10-12 kilograms of potassium oxide per mu, which is equivalent to the potassium content. 50% potassium sulfate 20-24 kg; third, fertilization damages the roots and affects fertilizer efficiency

Grape base fertilizer and topdressing must be done at least 4 times in total. Grapes are deep root crops, distributed in the soil layer of 20-60 cm, and the horizontal distribution is greater than the vertical distribution. Fertilization needs to be dug deep into the soil to achieve good results. Multiple times Fertilization not only damages the root system, but also greatly increases the labor intensity of farmers

Fourth, slow-release fertilizers currently on the market are mainly chemical coatings and application of chemical inhibitors, which are not only costly, but also easily cause ecological pollution to the soil

Fifth, the commercially available silicon fertilizer in the northern region is mainly steel slag silicon fertilizer, which has a low content, large application amount, low absorption and utilization rate of grapes, and steelmaking waste slag is likely to contain a variety of heavy metals, resulting in soil heavy metal pollution

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