稻草是水稻生产的副产品,它含有丰富的有机物及作物所需的各种营养元素。实行稻草还田是水稻地区就地取材,扩大有机肥源,改良土壤,提高生产的有效措施。初报中着重就稻草还田的增产改土效果进行了讨论。本文将着重报导不同条件下,稻草还田对土壤铵态氮(NH_4—N)的消长规律和氧化还原状况的影响,以及稻草还田对土壤养分的平衡作用。 Straw is a by-product of rice production, which contains rich nutrients and various nutrients needed for crops. The implementation of straw returning to the soil is an effective measure for local use of rice in the rice area, expanding organic fertilizer sources, improving soil and raising production. The first report focuses on straw returning to the soil improvement effect is discussed. This article will focus on reports under different conditions, the straw returning to the soil growth and decline of ammonium nitrogen (NH 4 -N) and redox status, as well as straw to soil nutrients balance.