玉米高产稳产土壤条件分析及调控措施研究

Study on Soil Condition and Regulating on Stable High Yield of Maize

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.

Compare to the soil of high unstable yield, there are some feature to the soil of high stable yield t better physical constitution, high nutrient of quick result but not very much,as well as more content of sand and little slay in lay 0~40cm, more content of organic in layer 20~40cm, lower capacity, better permeability. Growing under the soil of high stable yield, some characters will be showed different from the soil of high unstable yield;high yield, developed root system,low rate of senescence,more quantity and longer life root on layer 20~40cm, it is important to yield. Through deep ploughing and organic fertility applying, we can improve yield and some soil factors.