一、根据需要选择良种。根据当地的气候、土壤、栽培技术选择适宜的品种,如离城市近就应选早熟优质的品种,离城市远就应选耐贮运的品种。现比较好的早熟品种有庆农三号、巨宝、京欣一号等。二、注意良种生产单位的可信度。购种时应选择具有一定科研 First, according to the need to choose good seed. According to the local climate, soil, cultivation techniques to select the appropriate varieties, such as near the city should be elected early varieties of good quality, far away from the city should choose resistant storage and transportation of varieties. Now there are better varieties of Qingnong No. 3, Jumbo, Beijing Xin and so on. Second, pay attention to the credibility of seed production units. When buying should choose to have some research