Gentian is a perennial herb of Gentianaceae and is rooted as a medicine. Hi moist and cool climate, avoid strong direct sunlight. Fritillaria is a perennial herb of the lily family Fritillaria. Hi cold and humid climate, cold, not high temperature, when the temperature exceeds 20 °C at the end of May, the ground will stop growing and gradually wither, and the underground bulbs will enter into dormancy state. At this time, it is necessary to shade for safe summer. According to the above biological characteristics of gentian and peace fritillaria, maize and gentian, corn and Fritillaria were interplanted to meet the environmental conditions required for the growth of Gentian and Fritillaria, without affecting the normal corn. The output reached the goal of increasing production and efficiency. 1. Corn interplanting gentian technology 1.1 Fertilizing and crop selection Soil fertility Loose and moist land, with sandy loam as good. In combination with the ground, 667m2 (1 mu) of cooked manure 3000kg, diammonium phosphate 30kg. The fine smashing and smashing are all done. The squat width is 1m, the squat height is 15cm, and the work lane is 30 to 40cm. 1.2 Seedlings and Transplanting Gentians are bisexual. One is the seed breeding; the second is the propagation of the seed. The artificial cultivation uses transplanting seedlings, which has the advantages of neat seedling size, rapid growth, and high economic benefits. The suitable temperature for seed germination of Gentian is about 20-25°C, and nursery can be carried out in spring and autumn. Spring sowing time is from mid-May to late-June to mid-June. Autumn sowing time is from late October to early November. Drilling and sowing, spacing 23 ~ 33cm, each broadcast 4 lines. Sowing amount of 667m2 needs to be seeded, sand mixed weight 2.5 to 3kg (species, Shabi is 1:5), shallow overburden after sowing gently flattened, 1 year old seedlings can be transplanted. It is generally planted in the middle and early April of spring and in autumn from late September to early October. Row spacing 20cm, spacing 15cm, ditch depth in the ditch for the degree of expansion, covering about 3cm. The 667m2 (1 mu) seedlings use 35,000 to 40,000 seedlings. 1.3 Planted corn was selected for disease resistance, lodging resistance, mature stalk, and high-yield corn varieties. It was planted on April 25, with 1 row of corn on each side of each row, with a spacing of 40 cm and 667 m2 seedlings of 2000-2200. A line of corn is planted on the south of the plant, with two plants per hole. 1.4 Management and Harvesting Field management is mainly to control weeds and pests and diseases. Every growing season requires top dressing. If no seed is left, buds should be removed in time to facilitate root growth. Gentiana 2a can produce flowering results. If it is necessary to harvest seeds, it can be carried out from the end of September to mid-October. 667m2 (1 mu) can receive 2.5 to 3 kg of seeds. The roots of gentian are usually grown 3 to 4 years after harvest in the fall. 2. Intercropping Maize with Flat Fritillaria Technique 2.1 Selecting Fertilizer and Cropping Selection The loose and fertile sandy loam soil is better, and clay land, sandy land and low-lying land are not suitable for planting. In autumn or spring, the soil is ploughed to 20 cm, and the seedlings are meticulously chopped, generally 10 to 15 cm in height, 80 cm in width, 40 cm in the work lane, and excavated in 6 to 10 cm of deep soil in the ravine, and placed on the work track to form a trench. Put enough humus pig manure or horse manure into the tank, 6cm thick, and cover the excavated topsoil to fill. 2.2 Breeding Fritillaria cultivates seeds and bulbs, usually using the latter. Sowing in early June, the selected bulbs were divided into three grades according to large, medium and small bulbs, sowed separately. The spacing of large and medium bulbs was 6 to 10 cm, the spacing between plants was 5 cm, and the pellets were sown at a uniform spacing of 3 to 5 cm. The sowing volume of 667m2 (1 mu) requires balls of 150-200kg, and large and medium balls of 200-400kg. After sowing, it covers 4-6cm of sifting fine soil, and “head covering fertilizer†is 2～3cm. 2.3 Planting Maize Seeds Locally grown variety Danyu No. 22 was planted from the end of April to the beginning of May. One row of corn was planted on one side of each plant. The distance between the plants was 26cm, and 667m2 (1 mu) was planted with 2,000 seedlings. 2.4 Management and harvesting Since the Fritillaria was dormant after planting in the year, the top seedlings emerged in the early spring of the second year, and the harvesting time was in the middle and late June. Therefore, field management is relatively simple. Generally, in the middle and late November of each year, 3~4cm thick horse manure or pig manure is covered on the surface of the loquat, which is both top-dressing and heat-preserving. At the time of harvest, the big mother-of-pearls were sold, and Scallops (not enough for the goods) left to continue transplanting and breeding.