摘要
随着农业生产条件的不断改善 ,作物产量大幅度提高 ,同时作物秸秆也成倍增加 ,特别是玉米秸秆 ,茎秆高大 ,处理困难 ,未能很好处理利用 ,大部分被农民弃之焚烧 ,造成严重环境污染 ,成为一大公害。实行秸秆还田是减少环境污染 ,培肥地力促进农业生产持续发展的有效途径。本文通过对玉米秸秆连续 3年整株还田和粉碎还田试验研究 ,结果表明 :玉米秸秆整株还田可以有效促进土壤理化性状改善 ,使土壤有机质年递增 0 .0 33% ,0～ 10cm表层土壤容重降低 0 .17～ 0 .2 5g ,1～ 0 .0 5mm的大团粒增加 2 0 %左右 ,使后茬小麦增产 10 %。
The improvement of agricultural production condition results in great increases of both grain yield and straw. However, crop straw, in particular maize straw, has been either abandoned or burned burnt by farmers, which bring serious environmental pollution. To solve this problem, series experiments were set up in Quzhou. The whole maize straw was either directly amended or crushed and then amended to the soils. Three yearss results showed that the whole maize straw amendment effectively improved the soil physical and chemical properties. Soil organic matter annually increased by 0.033%. Soil bulk density of 0～10 cm decreased by 0.17～0.25 g·cm -3. Big soil aggregates of 1～0.05 cm increased by about 20%. Winter wheat yield increased by 10%. The whole straw addition to the soil was showed to be an effective means which saved time, labors and money.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
2003年第z1期42-46,共5页
Journal of China Agricultural University
关键词
玉米秸秆
整株还田
maize straw
pruning return field
作者简介
马永良,教授,主要从事区域综合治理研究.
