It refers to the knowledge of the method by which plant mothers disperse their seeds.
Source: "Mother Plants Have a Way"
This poem uses vivid metaphors and personification techniques to introduce us to three common plants: dandelions, cockleburs, and peas, which spread their seeds. The method tells us that nature is really wonderful and we must learn to observe carefully.
"Plant Mothers Have a Solution" comes from the first volume of the second-grade Chinese textbook (including the 2017 edition) published by People's Education Press. This article uses anthropomorphic techniques to vividly express scientific knowledge in the form of rhymes. The language is catchy, and it is a popular science work that you will never tire of reading.
Extended information:
The secret of seed dispersal
Dandelion is a perennial herb. Its fruits are like white pom-poms. When the pappus unfolds, it is like a parachute, flying in the wind and spreading the seeds in all directions.
In spring, catkins are flying everywhere. If you grab a ball of catkins and observe carefully, you will find some small particles inside, which are the seeds of the willow tree. Willow trees rely on the flying catkins to spread their seeds in all directions.
The method of Mother Impatiens is similar to that of Mother Pea. The fruits of Impatiens will burst when ripe. Mother Impatiens uses this method to send the seeds to all directions.