Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of powder type macroelement water-soluble fertilizer
The invention discloses a preparation method of a powder type macroelement water-soluble fertilizer, which comprises: selecting a base fertilizer, and crushing the base fertilizer into fine base fertilizer powder; taking starch, carrying out cross-linking etherification on the starch by using a cross-linking agent and an etherifying agent to obtain a precursor, adding sodium polyacrylate and carob gum into the precursor, then adding water, fully stirring for reaction, and carrying out drying gelatinization on a reaction product to obtain modified starch; preparing aerated concrete powder; and mixing the fine base fertilizer powder, the modified starch and the aerated concrete powder to obtain a blend, adding water into the blend, stirring well, performing ultrasonic treatment, concentrating, drying and crushing to obtain the powder type macroelement water-soluble fertilizer. The aerated concrete powder and the modified starch are added into the water-soluble fertilizer, so that fertilizer efficiency components are fully fixed and cannot be directly and completely collapsed, dissolved and lost when encountering water. Stable dissolution and emission of the fertilizer efficiency can be always maintained by a microporous structure, so that a slow release effect is achieved, the environmental tolerance of the water-soluble fertilizer is improved, and the long-term stability of the fertilizer efficiency is ensured.
本发明公开了一种粉剂型大量元素水溶肥的制备方法，包括：选取基肥，将基肥粉碎成基肥细粉；取淀粉，使用交联剂和醚化剂对淀粉进行交联醚化，得到前驱物，往前驱物中加入聚丙烯酸钠和角豆胶，再加入水并充分搅拌反应，将反应产物进行干燥糊化，得到改性淀粉；制取加气混凝土粉；将基肥细粉、改性淀粉和加气混凝土粉混合得到共混料，往共混料中加入水，搅拌均匀后超声处理，再经浓缩干燥、破碎，即得粉剂型大量元素水溶肥。该水溶肥中添加有加气混凝土粉和改性淀粉，使得肥效成份被充分固定，遇水不会直接全部坍缩溶解流失，且微孔结构始终能保持肥效的稳定溶解散发，从而起到了缓释作用，提升了水溶肥的环境耐受性，保证其肥效的长期稳定性。
Preparation method of powder type macroelement water-soluble fertilizer
The invention discloses a preparation method of a powder type macroelement water-soluble fertilizer, which comprises: selecting a base fertilizer, and crushing the base fertilizer into fine base fertilizer powder; taking starch, carrying out cross-linking etherification on the starch by using a cross-linking agent and an etherifying agent to obtain a precursor, adding sodium polyacrylate and carob gum into the precursor, then adding water, fully stirring for reaction, and carrying out drying gelatinization on a reaction product to obtain modified starch; preparing aerated concrete powder; and mixing the fine base fertilizer powder, the modified starch and the aerated concrete powder to obtain a blend, adding water into the blend, stirring well, performing ultrasonic treatment, concentrating, drying and crushing to obtain the powder type macroelement water-soluble fertilizer. The aerated concrete powder and the modified starch are added into the water-soluble fertilizer, so that fertilizer efficiency components are fully fixed and cannot be directly and completely collapsed, dissolved and lost when encountering water. Stable dissolution and emission of the fertilizer efficiency can be always maintained by a microporous structure, so that a slow release effect is achieved, the environmental tolerance of the water-soluble fertilizer is improved, and the long-term stability of the fertilizer efficiency is ensured.
本发明公开了一种粉剂型大量元素水溶肥的制备方法，包括：选取基肥，将基肥粉碎成基肥细粉；取淀粉，使用交联剂和醚化剂对淀粉进行交联醚化，得到前驱物，往前驱物中加入聚丙烯酸钠和角豆胶，再加入水并充分搅拌反应，将反应产物进行干燥糊化，得到改性淀粉；制取加气混凝土粉；将基肥细粉、改性淀粉和加气混凝土粉混合得到共混料，往共混料中加入水，搅拌均匀后超声处理，再经浓缩干燥、破碎，即得粉剂型大量元素水溶肥。该水溶肥中添加有加气混凝土粉和改性淀粉，使得肥效成份被充分固定，遇水不会直接全部坍缩溶解流失，且微孔结构始终能保持肥效的稳定溶解散发，从而起到了缓释作用，提升了水溶肥的环境耐受性，保证其肥效的长期稳定性。
Preparation method of powder type macroelement water-soluble fertilizer
一种粉剂型大量元素水溶肥的制备方法
YE LIN (Autor:in) / LIU CHENGSHUN (Autor:in) / ZHANG QINGHE (Autor:in) / XIANG JINGMIAO (Autor:in) / MA JUNMIN (Autor:in)
31.08.2021
Patent
Elektronische Ressource
Chinesisch
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