一、不同土壤适宜水分指标 1.评价依据土壤适宜含水量因作物、生育期、土类、气候条件而异。但过去,一直以田间持水量的70%～80%作为不同土壤适宜水分范围沿用至今。随着土壤水分能量概念的普及应用,把基质吸力0.06～1巴的持水量作为正常生育有效水范围。对于谷物作物来说。接近0.06巴的持水量往往引起作物徒长, First, the different soil suitable moisture index 1. Evaluation Basis Soil suitable moisture content due to crop, growth period, soil type, climatic conditions vary. However, in the past, 70% to 80% of the field water capacity has been used as a suitable soil moisture range so far. With the popularization and application of the concept of soil moisture energy, the water holding capacity of 0.06-1 bar of substrate suction is taken as the range of effective water for normal fertility. For cereal crops. Water holding capacity close to 0.06 bar tends to cause crop stunt,