Cultivation method for quickening earing and flowering of paddy rice

The invention discloses a cultivation method for quickening earing and flowering of paddy rice. The cultivation method comprises the following steps of (1) selecting soil meeting the following conditions as a seedling raising medium: in the seedling raising medium, the content of organic matters is 10-100g/kg, the content of total nitrogen is 1-10g/kg, the content of total phosphorus is 0.1-1.0g/kg, the content of total potassium is 5-50g/kg, and the pH (Potential of Hydrogen) value is 5.0-7.0; (2) seeding: seeding in the seeding density being 1-2 rice seeds/square centimeter, or 25g-40g (dried rice seed weight)/square meter (facility cultivation) or 35catty/mu (field planting); (3) conventionally managing fertilizer, water and disease pest and weed. According to the cultivation method disclosed by the invention, the earing time and the flowering time of the paddy rice are quickened to a large extent by increasing the seeding density and preparing the seedling raising medium, thus the growth period of the paddy rice is shortened, rapid propagation is facilitated, and crossbreeding of the paddy rice can be carried out at any time and anywhere.