论文部分内容阅读
土壤合理深耕是保证农作物正常生长发育,获得稳产高产的基本措施。我国劳动人民在长期的生产实践中认识了深耕对农作物的好处,故总结出“深耕加一寸,项上一茬粪”的农谚,为什么这样说呢?概括起来有以下几个方面: (一)深耕可调节土壤水、气、热,增强微生物的活动,有利于下层有机质的分解,促进养分的释放与转化,提高土壤的有效肥力。据测定,在寒冷季节里,深耕比浅耕,20厘米深处的土温提高1—1.5℃,昼夜温差
Soil is a reasonable deep plowing to ensure the normal growth and development of crops, access to stable and high yield of basic measures. The working people in our country, who have realized the benefits of deep plowing for crops in their long-term production practices, summed up the “proverbial farming with an inch of dung on the last crop of faeces.” Why we say this? Summarized in the following aspects: (1) Deep plowing can regulate soil water, gas and heat, and enhance the activity of microorganisms, which is conducive to the decomposition of the lower organic matter, promote the release and transformation of nutrients and improve the effective fertility of the soil. It is determined that in the cold season, deep plowing than shallow plowing, soil temperature of 20 cm depth increased by 1-1.5 ℃, temperature difference between day and night