水稻根际土壤的理化性质(一)

• 作 者: 木村真人 和田秀德 高井康雄 戴治家
• 出 处: 宁夏农业科技
• 发表日期: 1979年01期
• 关键词: 根际土壤 根际 还原状态 水田土壤 稻根 淹水 非根际土壤 理化性质 水稻根系 微生物

1.前言 Hiltner发现在接近植物根的土壤部分,比其它土壤部分含有较多的微生物,并将其定名为根际(Rhizosphere)。其后,对根际进行了许多研究,但大部分是以旱作为对象的,水稻根际的研究极少。作为水稻生育场所的水田土壤,在水稻生育期间淹水而土壤处于还原状态。因此,其理化性质、微生物状态等方面与旱田土壤显著不同。并且,稻根还具有在还原状态的土壤中分泌氧的特性。

1. Introduction Hiltner found that there are more microorganisms in the soil near the roots of the plants than in other parts of the soil and are named Rhizosphere. Since then, many studies have been conducted on the rhizosphere, but most of them focus on drought as well as very few studies on the rhizosphere of rice. Paddy soil, which is used as a breeding ground for rice, is flooded during rice growth and the soil is in a reduced state. Therefore, its physical and chemical properties, microbial status and other aspects of the soil significantly different. In addition, rice roots also have the property of secreting oxygen in the soil in a reduced state.