一忌高温：随着种子温度的升高，其呼吸量也不断增大，当种子内温度超过４０℃时，就很容易损坏。 二忌水分过大：种子水分含量越高，呼吸强度越大，消耗养分也相应越多，最后导致播后出苗越弱。种子水分过大，还容易发生种子霉烂。 三忌有毒气体：一氧化碳、二氧化硫及农药、 Avoid high temperature: As the seed temperature increases, its breathing is also increasing, when the seed temperature exceeds 40 ℃, it is very easy to damage. Second, avoid excessive moisture: the higher the moisture content of seeds, the greater the respiratory intensity, the corresponding consumption of nutrients more, resulting in the weakest after sowing. Seed water is too large, but also prone to rotten seeds. Three bogey toxic gases: carbon monoxide, sulfur dioxide and pesticides,