Root length density varied with fertigation frequencies, and the ratioof root length for different soil layers to the total root length in the profile varied with fertigation strategies.
We estimate that the ratioof N2O produced to N2O reduced within the soil profile has declined by about 10-25% relative to its pre-industrial value.
我们估计，比例N2O的制作n 2o的减少与土壤剖面已减少了大约10月25日%，相对于其前工业价值。
3
Described in this paper are the effects of the aspect ratio, the swept-back, the taper ratio and the profileof the ship rudder on its hydrodynamic performance by a test method of orthogonality.