The physical and chemical characters of artificial synthetic soil and their influence on the growth and output of tomato

The physical and chemical characters of some kinds of artificial synthetic soil and their influence on the growth and output of tomato were studied. The results show that the volume ratio of rubbish lives, sheep dung, corn straw,chaff quan dregs and rich soil is 0.20∶0.15∶0.15∶0.10∶0.40,joining quickly stale dose of ferment bacterium and the tomato fertilizer for special purpose,ferment to handle the rear artificial synthetic soil of compounding. It is helpful for tomato growth. Comparing with traditional soil culture(CK),soil bulk density reduces 0.31g/cm³,total porosity, woollen pipe porosity and air porosity increase 11.71%, 6.12% and 5.59% respectively;naturally water content,volume water content,water layer thickness and reservoir storage increase 106.93g/kg, 6.12%,12.24mm and 122.46m³/hm²; organic matter,available N,available P, available K and cation exchange capacity increase 16.70g/kg,29.97mg/kg,11.37mg/kg,35.25mg/kg and 5.73cmol/kg; the height,diameter, one fruit weight,fruit weight per plant,output,output value and profit of tomato increase 36.16cm,0.50cm,33.30g,0.97kg/plant,36.30t/hm²,21.8 thousand yuan/hm²，10.7thousand yuan/hm².And for the element Hg, Cd,Cr and Pb of heavy metal,the enrichments have obvious slow down tendency.