Detailed Explanation of Key Points of Arisaema Seed Sowing and Management Methods

        Nanxing, also called Arisaema, is a medicinal herb with relatively high economic value, and it is being planted more and more, but planting management has a particularly large impact on the yield of Arisaema, so one must be familiar with the characteristics of Arisaema in order to manage it in a targeted way. Arisaema can be propagated by tuber or by seed, but seed propagation takes a longer time to grow and is difficult to manage, so in Hebei Province tuber propagation is generally the main method. 1. Sowing time        For spring sowing of tubers, planting is generally done from Qingming to Guyu, that is, the first and middle ten days of April; if the temperature is on the low side, it can also be postponed to late April. For sowing seeds and harvesting tubers, sowing can be done after the wheat harvest, that is, in late June. 2. Growing environment        Arisaema likes moist, loose, and fertile soil and environment. Artificial cultivation should be intercropped with tall-stem crops, or a shaded forest floor, forest edge, or a relatively shady and damp valley environment should be chosen; soil that is loose, fertile, and well drained, sandy or semi-sandy land, is best. Any low-lying plot with poor drainage is not suitable for planting. If the plot chosen for planting Arisaema has relatively heavy soil texture or severe soil compaction, improvement must be carried out; after plowing, use 1 kg of Ciba soil loosening essence per mu, mix with 20 jin of fine sandy soil, and spread it evenly on the soil surface, which can effectively improve soil structure, cause the soil to form aggregate structure, solve the problems of compaction and heavy soil texture, and provide a good soil environment for high yield of Arisaema. 3. Land preparation and fertilization        Arisaema has weak roots, but its growth requires a large amount of nutrients, so soil fertility must be sufficient; use 2 cubic meters of organic fertilizer per mu, medium-nitrogen high-phosphorus high-potassium potassium sulfate type compound fertilizer at 80—100 jin per mu, 200 grams of Youli boron-zinc fertilizer (or 150 grams of Ciba boron-zinc fertilizer) to supplement boron fertilizer and zinc fertilizer, and 100 grams of Ruilv to supplement iron fertilizer; spread the organic fertilizer over the whole field, stir the compound fertilizer, boron-zinc fertilizer, and Ruilv evenly and then spread them, and then plow the land. 4. Treatment of seeds or tubers        Whether planting seeds or tubers, Arisaema must be treated to prevent viruses, phytophthora blight, fusarium wilt, and other pathogens on the seeds or tubers.        If they are seeds, use the coating method, using Gaogiao + Yiwei + Weifu; coat 8—10 jin of seeds with each 20 ml Gaogiao + 20 grams Yiwei + 20 ml Weifu, and dry them in a cool place before sowing.        If they are tubers, after overwintering they must first be soaked with a chemical agent; first sun-dry the Arisaema tubers for 1—2 days to promote after-ripening of the seed tubers, then treat with Ruimiaoqing, using 8 ml Ruimiaoqing diluted in 15 jin of water, put the Arisaema tubers into the liquid, soak for 1 minute, take them out and dry them in a cool place, then coat the seed tubers with Gaogiao + Weifu; each 20 ml Gaogiao + 40 ml Weifu diluted in 2—3 jin of water can coat 100—120 jin of Arisaema seed tubers; after coating, dry them in a cool place and then sow. 5. Sowing        After the land is prepared, open furrows at a row spacing of 25—30 cm and a furrow depth of 4—5 cm; after opening the furrows, in order to prevent soil-borne pathogens and prevent continuous cropping problems, use the chemical furrow-spraying method with Terui microbial agent, using 45 grams per mu, diluted twice one day in advance, mixed with 40—50 jin of water, spray this planting furrow, then place the Arisaema seed tubers and cover with soil.