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壮苗是黄瓜早熟丰产的基础。在黄瓜种子萌发时期就分化出三片真叶。播后10天,还是二子叶一心时,就开始花芽分化。据藤枝(1966)试验:播后14天一片真叶期,叶分化12节,花芽分化9节;播后20天二片真叶期,叶分化14节,花芽分化12节,性决定3节;播后31天四片真叶期,叶分化21节,花芽分化18节,性决定8节。由此可见黄瓜在苗期已构成具有生
Strong seedling cucumber is the basis of early yield. In the germination of cucumber seeds differentiate three true leaves. 10 days after sowing, or two cotyledons, they began to flower bud differentiation. According to Fujieda (1966) test: a real leaf stage 14 days after sowing, leaf differentiation 12, flower bud differentiation 9; 20 days after sowing two true leaf stage, leaf differentiation 14, flower bud differentiation 12, sexual decision 3 ; 31 days after sowing four true leaf stage, leaf differentiation 21, flower bud differentiation 18, sexual decision 8. This shows that cucumber seedlings have formed a living