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在4种不同秧苗叶龄及4种不同秧土含水量条件下进行机抛试验，明确了机抛秧随叶龄增大苗高增加，机抛对秧苗植株的损伤程度加重。叶龄超过4.5叶，苗高＞15cm，秧苗抛后的直立苗比例明显减少。秧土含水量大小影响抛秧的均匀度，机抛秧最适的含水量是＜35％。
Machine throwing tests were conducted under four different seedling leaf ages and four different seedling soil moisture contents. It was clarified that machine throwing seedlings increased with increasing leaf age, and machine throwing increased the degree of damage to seedling plants. Leaf age more than 4.5 leaves, seedling height> 15cm, the proportion of erect seedlings after the seedlings was significantly reduced. The amount of seedling water content affect the uniformity of throwing seedlings, throwing seedlings optimum moisture content is <35%.