Compound fertilizer special for Chinese yam

Abstract

The invention discloses compound fertilizer special for Chinese yam. The fertilizer is prepared from, by weight, 45 parts of urea, 30 parts of diammonium phosphate, 20 parts of potassium sulphate, 0.6 part of zinc sulfate, 0.8 part of manganese sulfate, 5 parts of triple superphosphate and 100 parts of river sand, wherein urea, diammonium phosphate, potassium sulphate, zinc sulfate, manganese sulfate and triple superphosphate are used for providing mineral nutritional components for the growth of Chinese yam, and river sand is used for improving cultivation soil texture, at least comprises silicon dioxide with content of 50% or above, and is screened by a 5-mm screen. The compound fertilizer is wide in application range, strong and lasting in fertilizer efficiency and high in in-season utilization rate; river sand in the formula has a remarkable effect on improving soil texture, various types of Chinese yam reach high quality and stable yield, and the defects that an existing fertilizer formula special for Chinese yam is poor in adaptability, low in nutrient content and low in in-season utilization rate, damages soil texture, can not adapt to the normal growth and development of different types of Chinese yam in different cultivation environments and the like are overcome.

Description

technical field [0001] The invention relates to an agricultural compound fertilizer, in particular to a special compound fertilizer for yams. Background technique [0002] Yam is cultivated in most parts of the country, and many farm varieties have been formed (there are hundreds of species recorded in literature, including more than 30 local famous and excellent varieties). Chinese medicinal materials are also one of the precious vegetables with rich nutritional value. Fresh yams contain an average of 14.48% crude protein, 3.78% crude fat, 43.79% starch, 1.14% total sugar, 5.51% ash, 2.62% potassium, 0.72% phosphorus pentoxide, 53.75mg / kg iron, 19.22mg / kg zinc kg, copper 10.85mg / kg, magnesium 0.14%, calcium 0.12%, manganese 5.38mg / kg, and various vitamins, especially the free arginine content is as high as 1.15%, which has laid a rich and unique nutritional resource for yam. At the same time, yam contains many secondary metabolites, such as allantoin, saponin, choline, do...

AI Technical Summary

Problems solved by technology

[0003] Yam is becoming more and more popular in domestic and foreign markets, and the market capacity is increasing year by year. However, the current problem in yam production is that the proportion of organic fertilizers used in various yam production areas in the country is getting smaller and smaller, and the application of chemical fertilizers is relatively blind. The amount of chemical fertilizers, The types are relatively random

This kind of blind fertilization regardless of the characteristics and laws of yam growth and the characteristics of the cultivation soil has caused serious instability in the yield and quality of yam, and has also caused adverse effects on the soil environment, even polluting the environment.

In this situation, there is an urgent need to develop and promote special compound fertilizers for yams. This kind of special compound fertilizers should be suitable for the soil environment and the main varieties of local yams in most of the country’s yam production areas. Narrow, low nutrient content, low utilization rate in the current season, damage to soil texture, can not meet the normal growth and development of different types of yams in different cultivation environments, need a high nutrient content, wide application range, can meet Special fertilizer for yam required by different types of yam