NOVELTY - Acidic soil conditioning agent comprises 42-50 pts. wt. potassium feldspar, 6-15 pts. wt. sodium silicate 10-20 pts. wt. calcium magnesium phosphate, 18-28 pts. wt. limestone, 20-30 pts. wt. plant ash/fly ash, 15-25 pts. wt. humic acid, 3-10 pts. wt. magnesium oxide, 1-7 pts. wt. activated auxiliary materials and 0.5-2 pts. wt. trace elements.    USE - Used as acidic soil conditioning agent.    ADVANTAGE - The agent is economical and is environmental friendly; improves soil quality and structure; eliminates soil diseases; and improves micro-ecological environment of soil.    DETAILED DESCRIPTION - Acidic soil conditioning agent comprises 42-50 pts. wt. potassium feldspar, 6-15 pts. wt. sodium silicate 10-20 pts. wt. calcium magnesium phosphate, 18-28 pts. wt. limestone, 20-30 pts. wt. plant ash/fly ash, 15-25 pts. wt. humic acid, 3-10 pts. wt. magnesium oxide, 1-7 pts. wt. activated auxiliary materials and 0.5-2 pts. wt. trace elements. The potassium feldspar includes silica more than 60%, aluminum oxide more than 15%, potassium oxide more than 8% and 2-5% iron oxide. The activated auxiliary material is sodium hydroxide, potassium hydroxide or potassium carbonate. The trace elements are boric acid, borax, zinc sulfate, copper sulfate, manganese sulfate or ammonium molybdate. An INDEPENDENT CLAIM is also included for continuous compressing device and for heavy clay soil conditioning comprising pressure barrel and pressure cylinder connected to pressure supplying device. The device further comprises feeding cabin and discharging cabin. The lower end of feeding cabin and one end of pressure cylinder is connected. The other end of the pressure cylinder is connected to the discharging cabin. The pressure barrel within is provided with pushing device. The feeding cabin and discharging cabin has multiple valves; and using continuous compressing device and for heavy clay soil conditioning comprising filling the material into the pressure cylinder and feeding cabin, closing the valves, through steam pipe and pressure cylinder injecting high pressure steam, when the pressure barrel cylinder body material reaches working conditions starting the time, after reaching the reaction time, opening a and b between the valve body and x and y between the two valve body, at the same time starting pressure barrel, introducing material slowly through auger unit area into the cylinder, at the same time the material falling into the hopper unit into a region bin b, the feeding cabin within the material x unit area resorted into area y, introducing the pressure barrel material into a feeding cabin x unit area, completing process, close a and b between valve body and x and y vale body, introducing into bin upwards in stepwise level within the feeding cabin, closing the feeding unit, until the top of the bin unit, when the feeding cabin material is introduced into cell area to the top unit area, followed by d unit of short positions and keep the pressure cylinder barrel and peer pressure, relieving pressure on d-block unit, operating d, e between the body 2 c, closing the valve between d, opening pressure relieving tube check valve on the pressure, slowly leaking into the e zone unit, completing relieving d and e between valve open so that material falls into d and e unit area and completing feeding cabin feeding process.