5kg Polysulphate 硫酸钾钙镁 14% K₂O（钾）、6% MgO（镁）、17% CaO（钙）, 48% SO₃（硫）

主要特性与养分
四合一营养：包含约 14% K₂O（钾）、6% MgO（镁）、17% CaO（钙）以及 48% SO₃（硫）。
天然环保：属于直接开采、物理破碎的纯天然矿石，不含化学添加。
低氯与适宜pH：几乎不含氯离子（氯化物极低），对忌氯作物（如果树、蔬菜、烟草）十分安全，且呈中性反应，不会破坏土壤酸碱度。
缓释特性：在土壤中溶解度适中，能够持续缓慢释放养分，减少养分流失。

农业功效
全面补充中微量元素：防止因缺镁导致的叶片发黄、缺钙导致的果实裂果或脐腐病、缺硫引起的长势瘦弱。
改善品质与产量：显著提高作物的抗逆性（如抗旱、抗寒），增加果实甜度、改善色泽和延长储藏期。

改良土壤：长期使用有助于维持土壤中硫、钙、镁的平衡，特别适合高强度耕作后的土地。

Total Potassium (K2O)14%
Total Magnesium (MgO)6%
Total Calcium (CaO)17%
Total Sulphur (S)19%
Total Boron (B)200 ppm
Granule size (Granular form)
min 90% 2-4 mm

Water soluble nutrients in sulphate form
Fully water soluble with all cations in sulphate form to improve nutrient uptake.
Improve yield and crop quality
Prolong storage life of crop, leading to higher crop productivity and crop quality.
Prolong nutrient release
The nutrients are slowly released into soil with minimal leaching effect.
Suitable for all crops including chloride sensitive crops
Low chloride, salinity and salt index to provide a risk-free environment to all crops.
Suitable as soil conditioner
Neutral pH to improve acidic soil condition while supplying nutrients at the same time.
Low carbon footprint
Lower carbon footprint value compared to most common fertiliser as a measurement of friendly environment.
Approved for use in organic agriculture
Concentrated organic product as approved by OMRI.
Compatible with other fertilisers
Easily blended with other fertilisers for better granulation.