Answer: In the land where grass peas have not been planted for a long time, rhizobial bacteria should be inoculated to increase the yield level. There are two ways to do this: First, take the topsoil from the fields where grass peas were planted last year and spread them evenly in the fields where grass peas are to be planted. Second, select disease-free, rhizobia-rich plants to root their nodules. Wash, dry in a dark room above 30°C, then mash, soak with water when sowing, mix well with seeds. Greenhouse Dutch Buckets,Dutch Bucket,Tomato Dutch Bucket,Plastic Dutch Bucket JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.skyplantgreenhouse.com