求翻译：生物学测定种子的传毒率。用灭菌土种植带有CGMMV 的西瓜和甜瓜种子，25—34°C条件下置于玻璃温室中，长至四叶期，观察发病症状统计 CGMMV 的发病率。是什么意思？

Biological determination of seed virus transmission rate. ,25-34 ° c conditions of watermelon and melon cgmmv in sterilized soil planted with seeds placed in a glass greenhouse, long four-leaf stage, the observation of the onset of symptoms the statistics cgmmv the incidence.

Seed biology measured rate of the drug. The sterilize soil cultivation CGMMV with the watermelon and cantaloupe seed, 25 - 34 °C conditions in glass greenhouse, up to 4 leaf stage, the symptoms of morbidity statistics CGMMV .

Biology determination seed's biography poison rate.Has the CGMMV watermelon and the melon seed with the antiseptic earth planter, 25-34°C under the condition puts in the glasshouse, the solstice four times, the observation symptom counts CGMMV the disease incidence rate.

Biological determination of seed transmission rate. Use sterilized soil cultivation of watermelon and melon seed with CGMMV, 25-34 ° c under glass in a greenhouse, up to four-leaf stage, observing symptoms of onset statistical incidence of CGMMV.

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