二.土壤酸度类型 0 Soil ph Soil ph B 500 至 Soil ph
二.土壤酸度类型
二土壤酸度类型 Diagram of Soil pi and Active and Reserve Acidity Reserve Acidity Low pI J High pil Soil Soill. Active Acidity :+ ion Basic Cation Clay Mineral (Ca++) Soil Solntion
二.土壤酸度类型
三土壤酸度的指标 (一)土壤酸度的强度指标(液相指标)--pH值: pH-The scientific definition is the negative logarithm of the Hydrogen ion concentration 依据对植物的影响程度将土壤pH分为以下等级 土壤喊的升级 等级 pH值 超强张度 35 极强度 35~44 强砖性 4.5~54 张性 55-64 甲注 65-75 诚注 76~85 强碱滢 86-95 极强碱性
三.土壤酸度的指标 （一）土壤酸度的强度指标（液相指标）----pH值： pH -The scientific definition is 'the negative logarithm of the Hydrogen ion concentration 依据对植物的影响程度将土壤pH分为以下等级
三土壤酸度的指标 Soil ph Acidi Neutrality Alkalin nity Mud- Mud- dr rang Strong erate Slight Slight erate Strong Strong PH3 PH 4 PH5 PH 6 PHT PH8 Ph9 pH H of Pl h range of pH range of Highly acidic mineral soils mineral soils al kaline eats in humid regions in arid regions soils
三.土壤酸度的指标
土壤酸度的指标 Descriptive terms commonly associated with certain ranges in soil ph are extremely acid than 4.5 lemon=2.5 vinegar=3.0 stomach acid=2.0 soda=2-4 very strongly acid 4.5-5.0 beer=4.5-5.0 tomatoes=4.5 strongly acid 5.1-5.5 carrots=5.0; asparagus=5.5; boric acid=5.2 cabbage=5.3 moderately acid 5.6-6.0 potatoes=5.6 ightly acid 6.1-6.5 salmon=6.2 cow's milk=6.5 neutral 66-73saa=66-73;bod=7.3 shrimp=7.0 slightly alkaline 74-7.8egg=7.6-78 moderately alkaline 7.9-84 sea water=8.2: sodium bicarbonate=8.4 strongly alkaline 8.5-9. borax=9.0 very strongly alkaline than 9.1 milk of magnesia=10. 5, ammonia=11 lime= 12
extremely acid < than 4.5 lemon=2.5; vinegar=3.0; stomach acid=2.0; soda=2 - 4 very strongly acid 4.5 - 5.0 beer=4.5 - 5.0; tomatoes=4.5 strongly acid 5.1 - 5.5 carrots=5.0; asparagus=5.5; boric acid=5.2; cabbage=5.3 moderately acid 5.6 - 6.0 potatoes=5.6 slightly acid 6.1 - 6.5 salmon=6.2; cow's milk=6.5 neutral 6.6 - 7.3 saliva=6.6 - 7.3; blood=7.3; shrimp=7.0 slightly alkaline 7.4 - 7.8 eggs=7.6 - 7.8 moderately alkaline 7.9 - 8.4 sea water=8.2; sodium bicarbonate=8.4 strongly alkaline 8.5 - 9.0 borax=9.0 very strongly alkaline > than 9.1 milk of magnesia=10.5, ammonia=11; lime=12 Descriptive terms commonly associated with certain ranges in soil pH are 三.土壤酸度的指标