Through fixedfield experiment and determinations of soil moisture, the field water utilization efficiency of wheat and rape seeds was discussed under no tillage and straw mulching.
通过田间定位试验和土壤水分的测定，探讨了免耕和秸秆覆盖还田对小麦、油菜土壤水分利用效率的影响。
2
Background &Objectives:It was difficult to get a good tissued ose distribution using fixedfield irradiation technique in large field. But the translating scanning beam irradiation can make it.
背景与目的：用固定野技术行特大野照射时，很难得到理想的组织剂量分布，而平移扫描式照射却能做到。
3
Fixed — ESQL read-only path (field reference) field property.