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高产稳产土壤与高产不稳产土壤相比,速效养分含量并不高,主要是物理性状好,即0～40cm土层砂性强,粘粒少,20～40cm土层有机质含量高,容重低,土壤疏松,通透性好.在高产稳产土壤条件下,玉米产量高,根系发达,衰老慢,特别是20～40cm土层根量大,寿命长,对生育后期产量形成有重要作用.施用大量优质农肥、进行上壤深松,具有明显改善土壤理化性状及增产作用.
Compared with the high-yield and unstable-yielding soil, the available nutrient content is not high, mainly because of its good physical properties, that is 0-40cm soil layer is strong sand, less clay, high content of organic matter in 20 ~ 40cm soil layer, low bulk density, Under the condition of high and stable soil yield, the yield of maize is high, the root system is developed and the senescence is slow, especially in the layer of 20 ~ 40cm soil layer, which has a long root life and plays an important role in yield formation in later growth period. High-quality fertilizer for deep soil loosening, with significantly improved soil physical and chemical properties and yield.