broadcast application involves spreading dry potash fertilizer uniformly over the soil surfaceit is most effective if done before or during the soil preparation so the potash is incorporated into the root zone
撒播施肥包括将干钾肥均匀地撒在土壤表面，如果在土壤准备之前或期间进行，钾肥将被吸收到根区，这是最有效的
以上为机器翻译结果，长、整句建议使用 人工翻译 。