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辽宁玉米产区长期以来大部分田块只采用传统的耕翻作业,致使土地结构变劣,其下形成了一层坚厚的犁底层,土壤容重达1.50g/cm3,玉米根系下扎困难,致使影响了作物吸水、吸肥,而且容易倒伏,严重制约了玉米产量的提高。本试验在辽宁省阜新县平安地土城子村进行定点试验,设置了T1旋耕(对照)、T2旋耕+深松25cm、T3旋耕+深松25cm+秸秆还田6 000kg/hm2和T4旋耕+秸秆还田6 000kg/hm2处理,对玉米地上部生长发育、玉米产量、经济效益等进行研究。
For a long time, most of the plots in Liaoning cornfield only use traditional tilling and turning operations, resulting in the deterioration of land structure. Underneath, a thick layer of plow is formed, with a soil bulk density of 1.50g / cm3. As a result, it affected the crops to absorb water, absorb fertilizer, and easily lopsided, severely restricted the increase of corn yield. The experiment was carried out in Tuchengzi Village, Ping’an, Fuxin County, Liaoning Province. Fixed-point experiments were carried out with T1 rotary cultivating (control), T2 rotary cultivating + subsoiling 25cm, T3 rotary cultivating + subsoiling 25cm + straw returning 6 000kg / hm2 and T4 rotation Tillage + straw 6 000kg / hm2 treatment, the growth and development of corn shoots, corn yield, economic benefits and so on.