在玉米地里可套种龙胆草和平贝母。龙胆草喜潮湿、凉爽气候，忌强烈阳光直射。平贝母喜冷凉、湿润气候，不耐高温。根据龙胆草和平贝母的上述生物学特性，采取玉米与龙胆草、玉米与平贝母套种，既满足了龙胆草、平贝母的生长环境条件，又不影响玉米的正常产量，能很好地达到增 In the corn can be intercropped gentian and Fritillaria. Gentian wet, cool climate, avoid strong direct sunlight. Fritillaria hi cool, humid climate, high temperature. According to the above biological characteristics of Gentiana scabra and Gentiana scabra, adoption of corn and gentian, corn and Fritillaria intercrop coverage not only satisfies the growth environment conditions of gentiana and Fritillaria cirrhosa, but also does not affect the normal output of corn, Can well achieve increase