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李明同学把调查某一农田生态系统作为研究性学习课题 ,他认真考察了水稻从播种到稻杆还田的全过程 ,下面是他的调查内容及其感想和建议。(1)早春农民开始浸种、催芽 ,种子主要靠作用吸水 ,然后主要靠作用吸水。经研究分析 ,10 0Ｋｇ的干种子催芽后能得到 30 0ｋｇ发芽的种子 ,?
Li Ming took a survey of a farmland ecosystem as a research topic. He carefully examined the whole process from sowing rice to rice straw to field. The following is his survey content, his thoughts and suggestions. (1) In early spring, the farmers began to soak seed and germinate. The seeds mainly rely on the action of absorbing water, and then relying mainly on the action to absorb water. According to the research and analysis, after germination of 100Kg dry seeds, 30Okg of germinated seeds can be obtained.