吉林农业大学学报2000，Vol.22Issue(4)：73-75,3.
深松土对玉米根系生长发育的影响
Effect of Subsoiling on Root Growth of Maize
摘要
Abstract
The field experiments and investigation showed that in the most corn-planting areas of Jilin province there existed a solid plough pan, which usually lays at the depth of about 20 cm, with a thickness of 7～11 cm, a solidity of three times as that of plough layer. It was proved that breaking the plough pan by subsoiling improved the ecological conditions with a significant reduction of solidity, an increase of soil capacity on water depositing and holding. So subsoiling promoted the growth of corn root system, and the dry weight of roots increased obviously. The distribution of corn roots in various soil layers tended to go down after the measure,which increased root activity and led to a better drought resistance in the late period of corn growth and the increase of about 2.6 ％ to 3.1％ grams per 100 grains. The total increase of corn yield ranged from 6.2％ to 8.0％ in the first year but from 7. 8％ to 8.6％ in the following year. These effects were even evident when breaking plough pan was combined with a deep application of fertilizer.关键词
玉米/深松/根系Key words
maize/breaking plough pan/root分类
农业科技引用本文复制引用
宋日,吴春胜,牟金明,徐克章..深松土对玉米根系生长发育的影响[J].吉林农业大学学报,2000,22(4):73-75,3.基金项目
国家科技攻关资助项目(95001-001-03-02) （95001-001-03-02）
