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土壤是植物生存的基础。这种基础的实质是土壤肥力,土壤养分又是土壤肥力的重要标志。土壤有了足够的养分,植物才能正常生长。植物生长中的生物小循环作用又可促进土壤肥力的形成。有关研究资料表明,绿色植物不但以它合成的有机质和贮藏形式的太阳能丰富土壤养分,使土壤的肥力状况发生本质的变化,而且它的根部还经常释放出二氧化碳和某些有机酸类,直接在土壤中引起一系列的生物化学和物理化学作用。根系还可调节土壤微生物系统的组成和数量,抑制某些生物化学过程。根在土壤中穿插的机械力量,也是促进土壤结构形成的活力之一。
Soil is the basis of plant survival. The essence of this foundation is soil fertility, which is an important indicator of soil fertility. The soil has enough nutrients for the plants to grow normally. The biological action of small plants in the growth cycle can promote the formation of soil fertility. The research data show that not only is the green plant rich in soil nutrients with its synthetic organic matter and stored form of solar energy, which makes the fertility status of the soil essentially change, and its roots often release carbon dioxide and certain organic acids directly Soil causes a series of biochemical and physicochemical effects. Root systems also regulate the composition and amount of soil microbial systems and inhibit certain biochemical processes. The mechanical power rooted in the soil is also one of the activities that promote the formation of soil structure.