1. Methods to promote plant reproductive growth: Apply phosphate fertilizer and potassium fertilizer, because phosphorus can not only promote crop germination, but also promote flower bud differentiation, shorten flower bud differentiation time, promote fruit ripening and increase crop yield. Potassium can promote photosynthesis, increase the assimilation rate of carbon dioxide, promote the transportation of photosynthetic products and improve the productivity of source and sink.

2. Plant growth can be divided into vegetative growth and reproductive growth. Vegetative growth refers to the growth of roots and leaves, and reproductive growth refers to the growth of organs related to reproduction: flowers, fruits and seeds, flowering, pollination and fertilization, and fruiting. Plants grow nutritionally before they start reproductive growth. For annuals and biennial plants, vegetative growth stops when reproductive growth is carried out, and they die for many years when reproductive growth ends.

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