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Ammonium Sulfate 21-24

Ammonium Sulfate 21-24
Ammonium Sulfate 21-24 is a high-quality inorganic nitrogen-sulfur compound fertilizer, the classic agrochemical with fixed nutrient content of 21% total nitrogen (N) and 24% available sulfur (S), presented as white crystalline powder or granular solid. It features high water solubility, rapid nutrient release and easy crop absorption, suitable for all soil types especially sulfur-deficient acidic soils. Widely applied in grain, cash, fruit and vegetable crops, it supplies dual N-S nutrition, promotes crop growth and improves yield, a staple fertilizer for agricultural production with mature production process and stable quality.

Product Details

Basic Product Specifications
IndexStandard Specification
Nutrient ContentTotal N ≥21%, Available S ≥24%
AppearanceWhite crystals/granules, odorless, no visible impurities
Purity≥99% (industrial/agricultural grade)
Water SolubilityHighly soluble in water (fully dissolved at 20℃)
pH Value5.0-6.0 (1% aqueous solution, weakly acidic)
FormCrystalline (fine/coarse/extra-large) / Dried granules
Particle SizeCustomizable (≤1.1mm fine crystals / ≥1.2mm coarse crystals / 2-4mm extra-large crystals)


Core Functions & Nutritional Value

  1. Dual N-S Nutrition Supply: 21% quick-acting ammonium nitrogen is easily absorbed by crop roots, meeting the core nitrogen demand for vegetative growth; 24% available sulfur supplements essential sulfur for amino acid, protein and chlorophyll synthesis, avoiding sulfur deficiency-induced yellowing leaves.
  2. Soil Adaptability: Weakly acidic property optimizes acidic soil structure, activates soil nutrient availability (e.g., phosphorus, potassium), and is the ideal fertilizer for sulfur-deficient farmland, solving the problem of simultaneous N-S deficiency in crops.
  3. Crop Growth Promotion: Enhances photosynthesis, accelerates nutrient accumulation, promotes tillering and fruiting, and increases crop thousand-grain weight and fruit setting rate.
  4. Quality Improvement: Improves crop protein and oil content (especially for oilseeds like rapeseed, peanut), and enhances the commercial quality of fruits and vegetables with bright color and plump fruit.

Main Applications

Suitable Crops

  • Grain Crops: Wheat, rice, corn, barley (promote tillering and grain plumpness)
  • Oilseeds & Cash Crops: Rapeseed, peanut, cotton, tobacco, tea (improve oil/protein content and product quality)
  • Fruits & Vegetables: Apple, citrus, tomato, cucumber, strawberry (supplement sulfur for bright color and high yield)
  • Forage & Economic Crops: Alfalfa, sugarcane, beet (promote rapid growth and high biomass)


Application Methods & Dosage

  1. Base Fertilizer: 20-30kg per mu, mixed evenly with soil before sowing/transplanting, provides basic N-S nutrition for the whole growth cycle.
  2. Top Dressing: 10-15kg per mu at crop tillering, jointing and flowering stages; applied by spreading or ditching, covered with soil after application to reduce nitrogen volatilization.
  3. Foliar Spraying: Dilute into 0.5-1.0% aqueous solution, spray on leaves in the morning/evening, emergency supplementation for N-S deficiency (yellowing leaves).
  4. Mix Application: Can be mixed with phosphate fertilizer, potassium fertilizer (excluding alkaline fertilizers such as lime, plant ash) to realize balanced fertilization.

Product Advantages

  1. Fixed High Nutrient: 21-24 standard N-S ratio, no component fluctuation, stable fertilization effect, meeting the industrial standard of agricultural ammonium sulfate.
  2. Fast & Efficient Absorption: High water solubility, quick-acting nutrient release, rapid effect after application, suitable for timely top dressing of crops in growth period.
  3. Wide Soil Adaptability: Adapt to acidic, neutral, calcareous soils, especially suitable for sulfur-deficient farmland; weakly acidic property can improve soil acidity and activate soil nutrients.
  4. Diverse Forms & Customization: Available in fine/coarse/extra-large crystals and dried granules with customizable particle size, adapting to different application methods (mechanical spreading, manual sowing).
  5. Mature Production & Stable Quality: Adopt advanced industrial synthesis process, low moisture content, no caking, easy storage and transportation, consistent product quality.
  6. Cost-Effective: High nutrient content, low production cost, obvious yield-increasing effect, high cost performance for large-area agricultural application.


Product Application

  • 1744706412768
  • 1744706437850
  • 使用领域

Company Profile

Shandong Nongsheng Fertilizer Co., Ltd. adheres to the "co-prosperity" concept of "win-win development with customers", continuously develops products that meet customer needs, improves process quality, establishes a cooperative mechanism with chemical research institutions and universities, links customer needs, provides product customization services, provides customers with a variety of choices, and reduces supply risks and procurement costs.

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Our products are of high quality and low price, and our cooperative customers recognize our products. And as long as the cooperative customers have maintained long-term cooperative relations.

Certificate Of Honor

For a long time, we have been focusing on the research, development and management of crop fertilizers and their surrounding industrial chains. Our customers are all over the country, and in Southeast Asia, Europe, the Middle East, Africa and other regions. With stable quality and high-quality services, our company has become a strong supplier and exporter of fertilizer and related products in China.

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Customer Visit

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Transport packaging

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FAQ

Q: Are you a factory or a trading company?

A: We are a company integrating manufacturing and trading.

Q: Can you provide samples for testing before mass production?

A: Of course, we can send you samples for free, and we also attach COA, but for the sample shipping fee, our company can't afford it!

Q: How can I get an accurate quotation?

A: Please tell us the accurate product specifications, particle size, color, and your use, and we will provide you with an accurate quotation.

Q: Can you provide COA?

A: Of course, we can provide it, but only ordinary products, if you want an accurate COA, we need to produce samples. After testing, provide an accurate COA.

Q: Can you accept OEM (special specifications, sizes)?

A: Of course, we can customize according to different requirements of customers, not only that, we can also design packaging according to your requirements.

Q: If I know the use, but don't know the exact specifications, can you provide an exact quotation?

A: Of course, we will recommend products according to your usage, please trust us.

Q: Can I visit your factory before placing a large order?

A: Of course. Welcome at any time.
Q: Can you customize the packaging?

A: Of course, we can customize the packaging according to the pictures provided by customers.
Q:What is the payment terms of your company?
A: T/T,L/C at sight,Western Union,Paypal.

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