Cuscuta has the effect of supplementing liver and kidney, benefiting essence, and eyesight, and is a beauty and health tonic. In recent years, due to extensive land reclamation and extensive use of herbicides, Cuscuta resources are increasingly lacking, and market prices are bullish. Cuscuta is an annual parasitic herb of the family Convolvulaceae, which absorbs the host's nutrients. The roots and leaves are degraded, and there is no chlorophyll, and photosynthesis can not be used to make nutrients. Therefore, it cannot be single species. Only good parasitic plants (wide-leaved weeds such as soybeans, Sesbania, or calabas) can be planted first to obtain better yield. If planted with soybeans, about 50 kilograms of seeds can be produced per acre and 30-50 kilograms of soybeans can be produced. The comprehensive planting efficiency is generally higher than that of grain, cotton, oil and other crops. First, collect the seeds. The maturation time of Dodder seed is usually from early August to early September. It is easier and easier to collect seeds in the middle and late August. If the pharmaceutical company has fresh seeds, it can also be purchased for use, but germination tests must be done first. Second, soil fertilizer requirements. Dodder does not require special soils, as long as it is suitable for soybeans. When sowing soybeans, sufficient base fertilizer should be applied. Generally, 50 kg of superphosphate, 10 kg of urea and some organic fertilizer are used per mu. Because of dodder parasitic, nitrogen fertilizer is a bit more, and soybeans will not go crazy. Only when soybeans (hosts) are grown is it possible for Dodder seed to have a better yield. Third, planting and sowing. Cuscuta cultivation trials showed that the host had the best soybeans, followed by the broad-leaved weeds such as Sesbania, pupa and so on. Soybeans should be selected from local suitable, medium-maturing varieties with large plants, and the density should be increased when planting so as to obtain more soybean groups. Cuscuta can be sown late, usually after sowing after soybean sowing. The purpose is to allow Cuscuta later emergence, so that the soybean is not parasitic in the seedlings, easy to form a robust population of soybeans, shorten the distance between the maturity of soy and dodder. When sowing, 20 grams of seedlings with 2 grams of dry fine soil mixed with sows in the soybean field, cover with a broom brush soil cover, you can not cover seed. It is easy to emerge after the rain. Fourth, field management. In order to obtain more soybean bio-production for dodder parasitism, good management of soybean is a key point. If the density of the local dodder is too large and the soybeans cannot satisfy the parasitism, some dodder seeds may be properly removed, so as to ensure that the yield is not affected due to the lack of hosts. Control of grass weeds Weeds can be sprayed with herbicides such as gaiseng canonide and glyphosate (according to the instructions) at the three-leaf stage of weeds. Do not use acetosine, razor wire, and other silkworm-sensitive chemicals. Fifth, the harvest. Cuscuta's harvesting period is usually before the maturity of soybeans. When the pods of Cuscuta chinensis become more than 50% black, more than 30% yellow, and 10%-20% green to yellow, the harvest is more appropriate and the loss is small. A small area harvest can be manually pulled up and then concentrated threshing; a large area of ​​harvest can use rice and wheat harvesters, but to reduce the cut hoe, slow down the threshing drum speed and reduce the wind, so as not to miss the cut, broken beans and blower to blow the pods Cause unnecessary losses. Sixth, the next year. If there are no more dodder seedlings in the plots where docus is planted, freshwater rice should be grown in areas where freshwater is irrigated, and grasslands such as corn and sorghum should be cultivated in drylands without water sources. If you need to grow leguminous crops or vegetables, you can use acetochlor or cable to treat topsoil before sowing to kill dodder seedlings. If there are missing seedlings of dodder seeds, they can be removed together with the host as soon as possible. Burned or buried deeply to ensure normal crop growth.