不同玉米秸秆还田方式对植烟土壤化学性质及烤烟产量的影响

玉米秸秆还田不仅是农业废弃物高效资源化利用方式之一,还可以有效改善烟草种植过程中由于田间管理不合理所导致的土壤肥力下降和功能退化的问题。本实验为了探究不同玉米秸秆还田方式对土壤及烟草产量的影响,共设有四个处理,分别为秸秆深埋、深松、粉垄30cm、粉垄50cm处理。结果表明：(1)粉垄50cm处理土壤有机质、硝态氮、铵态氮、速效钾、土壤C/N比提升效果最好；(2)各处理烟草氮、磷元素含量差异不显著,深松与粉垄50cm烟草产量最大；(3)粉垄50cm烟株上等烟比例最大,深松、粉垄50cm处理烟株产值最大。因此,粉垄50cm玉米秸秆还田方式可以有效提高土壤营养元素含量,提升烟草品质,显著增加烟草产值。

Effect of different maize stover return methods on soil and tobacco yield

Returning corn stover to the field is not only one of the ways of efficient resource utilization of agricultural waste, but also can effectively improve the problem of soil fertility decline and functional degradation caused by unreasonable much field management during tobacco cultivation. In this experiment, in order to investigate the effect of different corn straw return methods on soil and tobacco yield, there are four treatments, namely straw deep burial, deep loosening, flour monopoly 30cm and flour monopoly 50cm treatment. The results showed that (1) the powdered monopoly 50cm treatment had the best effect in improving soil organic matter, nitrate nitrogen, ammonium nitrogen, fast-acting potassium, and soil C/N ratio; (2) the differences of tobacco nitrogen and phosphorus content among treatments were not significant, and the tobacco yield was the largest in deep pine and powdered monopoly 50cm; (3) the proportion of top grade tobacco plants was the largest in powdered monopoly 50cm, and the production value of tobacco plants was the largest in deep pine and powdered monopoly 50cm treatments. Therefore, the powdered monopoly 50cm corn straw return method can effectively improve the content of soil nutrients, enhance tobacco quality and significantly increase tobacco production value.