This product is 26% nitrogen content, 2-4 mm particles, 40-50 kg packing 1, sulfur, nitrogen, not only on the supply of nitrogen nutrient (a large number of elements) at the same time, can also provide crop nutrient sulphur (elements). 2, sulfur elements: normal concentration of between 0.1% and 0.4%, sulfur main role is to promote plant growth, lack of sulfur can significantly inhibit plant growth, characteristics for plant green. Short. Stems thin and spindle. Many plant sulfur deficiency symptoms are like nitrogen deficiency symptoms, this inevitably lead to many deficiency causes of misdiagnosis. Plant photosynthesis, protein synthesis, must component cystine. Cysteine and methionine sulfur amino acid, and 90% of sulphur exists in the amino acid in the plant, so the high quality of amino acid foliar fertilizer to plant growth supplement enough sulfur elements. In addition, the sulfur can improve the oil crops oil content.