（Mn＋Zn）-LS螯合微肥的研制及肥效实验

以废碱锰电池和木质素为原料,采用＂焙烧-酸解-螯合＂工艺制成（Mn＋Zn）-LS螯合微肥,通过红外光谱分析改性前后木质素的结构变化,并利用盆栽试验验证其肥效。红外分析结果表明,微肥的红外光谱图在峰形、峰位和强度上都发生了较大的变化,木质素结构单元上引入了新的基团（-SO3H、-SO-O-）和金属离子的络合导致了芳环吸收峰的变化,而且其中的络合也与芳环有关。盆栽试验结果表明,螯合微肥施用效果较好、增产明显,具有一定的抗病能力和抗倒伏性,且施用量范围广、易控制,适用范围广;在本试验中,Mn以2mg·kg-1土的施用量为最佳,鲜重增加46.3%,干重增加28.5%;同时盆栽后可以改善土壤pH和有效Zn、Mn含量,为后期利用提供肥力保证。

Developing（Mn＋Zn）-LS Chelated Micronutrient Fertilizer and Its Effect on Corn Growth

Batteries pollution and treatment was the focus of the present social environmental issues.From the perspective of agricultural chemistry,the elements in waste Zn-Mn batteries,such as Zn,Cu,Fe,Mn,K,except for Hg,were all crops essential nutrients,especially K,which was the main nutrient elements.In view of this,converting the battery into fertilizer and applying it in the agricultural production was a kind of effective method of comprehensive utilization,and didn＇t need to separate and purify the trace elements in the batteries,which could save a lot of process.Targeting on alkali manganese battery,which was the fastest developing and most consumed battery currently,according to solid waste treatment of ＂three principles＂,considering the roasting technology and crop demand for Zn,Mn,etc,following the ＂treat waste by waste＂ thought,using the papermaking industry by-products-lignosulphonate as chelating agent,this research poses a technical solution turning the daily scrap into agricultural resource：＂batteries free-pollution disposal and chelating micronutrient fertilizers preparation＂ the life of agricultural waste recycling technology solutions.The result showed that,the spectrum of micronutrient fertilizer changed in peak shape,peak position and strength.The new group（-SO3H,-SO-O-） introduced on lignin structural unit complexing with metal ions,causing the change of aromatic ring absorption peak.And the complex was related with the aromatic ring.The pot experiment results showed that chelating（Mn＋Zn）-LS micronutrient fertilizer had a good effect and obviously increased the production.It had certain disease resistance and lodging resistance,and had advantages such as wide scope of dosage,wide application scope and easy to control.In this experiment,the dosage of Mn was 2 mg·kg-1 soil for the best.The fresh and dry weight separately increased 46.3% and 28.5%.Also after potted planting,the pH and Zn,Mn content in soil were improved,providing sufficient fertility in later stage.In the alkaline soil lack of Zn,like calcareous soil,and latosolic red soil lack of Mn,（Mn＋Zn）-LS had wide application prospects.