EFFECT OF MACHINERY TRAFFIC AND TILLAGE OPERATIONS ON THE PHYSICAL-PROPERTIES OF A CLAY AND ON YIELD OF SILAGE CORN

被引：34

作者：

MCKYES, E

NEGI, S

DOUGLAS, E

TAYLOR, F

RAGHAVAN, V

机构：

[1] Department of Agricultural Engineering, McGill University, Macdonald College

来源：

JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH | 1979年 / 24卷 / 02期

关键词：

D O I：

10.1016/0021-8634(79)90048-9

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Comparative plots were set up on a clay soil with different combinations of tractor traffic and tillage treatments prior to the growing of a silage corn crop. Soil bulk densities, moisture retention characteristics and crop yields were measured in the experiment. The results indicated an optimum soil dry bulk density of 1020 kg/m3 for maximum crop yield in the particular season of the experiment. Similar tests done in a wetter season the year before indicated a lower optimum soil dry bulk density of below 900 kg/m3. These results are discussed in terms of the water retention characteristics or the soil and the soil structural changes caused by different treatments. © 1979.

引用

页码：143 / 148

页数：6