不同耕作方式对玉米生理特性的影响

Study of Influence upon the Physiological Characteristics of Maize Methods by Different Farming Skills

以四川主栽玉米品种成单30为试验材料,研究了翻耕、垄播+秸秆覆盖和周年免耕3种耕作方式对玉米生理特性的影响.结果表明:三种耕作方式对玉米株高、直径、叶面积等形态指标的影响差异不显著,对植株叶、根、穗等器官干质量表现为生育前期差异不明显,灌浆期为垄播+秸秆覆盖>周年免耕>翻耕,收获期差异不显著.三种耕作方式的经济产量表现为垄播+秸秆覆盖>周年免耕>翻耕.

The main cultivated maize variety in Sichuan——Chengdan 30 is used to study the influence of the three cultivating methods of tillage（marked A）,ridge sowing with mulching（marked B） and annual non-tillage（marked C） upon corns＇ physiological characteristics. The results showed that：There are no obvious differences in the indexes of plant height,plant diameter and leaf area,and on the dry weight of leaf root and ear in the early growth period and harvest period,however,in the period of Grain-filling the dry weights is as follows：BCA. The output of the three cultivating methods is BAC（corn cultivated with method B produces the most corn,method A does less,and method C does the least）.