共 50 条
- [22] The effect of winter cover crop management on nitrate leaching losses and crop growth JOURNAL OF AGRICULTURAL SCIENCE, 1998, 131 : 299 - 308
- [30] EFFECTS OF INTENSIVE CROPPING SYSTEMS AND PESTICIDES ON NEMATODE POPULATIONS AND CROP YIELDS SCIENCE AND EDUCATION ADMINISTRATION PUBLICATIONS, 1983, ARR (NS-14): : 1 - 36