[Effect of boron fertilization on B uptake and utilization by oilseed rape(Brassica napus L.) under different soil moisture regimes].

Pot experiment was conducted in greenhouse to determine the effect of boron fertilization on B uptake and utilization by oilseed rape at seedling stage as influenced by soil moisture regime. The results showed that B concentration in shoot and root increased with the increase of soil water content and B fertilization level, while its utilization efficiency(BUE) and mobilization index(BMI) increased with the decrease of soil water content and B application level. Differences in BUE and BMI of test oilseed rape cultivars were significant, i.e., V1 showed higher BUE and BMI than V4 under the same conditions. It is concluded that BUE and B mobility in plant were the major factors responsible for the differences in response of different oilseed rape cultivars to B deficiency.