proper spray season

例句：

1. 1. The properspray season for this type of pesticideis from late spring to early summer.
   这种农药的适当喷雾季节是从晚春到早夏。
2. 2. During the proper spray season, farmers should apply the pesticide atthe right time and in the right amount.
   在适当的喷雾季节，农民应该在正确的时间和正确的量下施用农药。
3. 3. Theproper spray season for controlling this disease isfrom mid-autumn to earlywinter.
   控制这种疾病的适当喷雾季节是从秋季中旬到冬季初。