There was no significant effects on N, P, K uptake between appliednitrogen rates.
增施氮肥对番茄地上部N、P、K的吸收没有明显的影响。
2
The content of exchangeable Al increased with the amount of appliednitrogen as urea.
茶园土壤交换性铝含量随施氮量的提高而增加;
3
The increase amount of residual nitrate N from third harvesting to fifth harvesting was 51.6% of the total amount of appliednitrogen during this period.