| 摘要 |
The soil conditioner of salt land is prepd. by 1) pulverizing barks into 1-2cm particle size to obtain the bark powder, 2) dissolving calcium phosphate, ammonium phosphate, ammonium sulfate, potassium nitrate, calcium cyanide, ammonium nitrate, potassium sulfate, manganese sulfate etc. with 15-30 deg. C water, 3) absorbing the obtd. bark powder into the obtd. soln. by spraying or soaking, and drying into 20-30% water content, and 4) coating the dried bark powder with carbonate powder, vermiculite and sulfur powder to obtain the final product.
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