Abstract:

Six summer green manure varieties were planted in Xinyang City, and inoculation and non-inoculation of rhizobia were set up, and a total of 12 treatments were set up for planting experiments. Summer green manure varieties suitable for fertilizer reduction of winter wheat were selected by planting and screening to prepare for the utilization. The green manure varieties were comprehensively evaluated from various aspects. The results showed that there was little difference in the emergence stage of the 12 treatments, with Jufeng and Fendou Mulv 2 budding stage being the earliest, and Tianjing budding stage being the latest. Fendou Mulv 2 had the earliest flowering period, and Tianjing had the latest flowering period. Fendou Mulv 2 has the earliest full flowering period, and Tianjing has the latest full flowering period, but both can be used for green manuring and water-logged compost at the end of August. There was a large difference in the yield of fresh grass at the peak flowering stage, and the fresh yield of Tianjing inoculated with rhizobia was the highest, and the nutrient content of nitrogen, phosphorus and potassium in Jufeng and Zheng 1307 plants was the best. The nutrient accumulation of nitrogen, phosphorus and potassium was the highest in Tianjing inoculated with rhizobia. Inoculated with rhizobia can reduce soil temperature and increase soil moisture. Increasing soil stability and wind erosion resistance can improve soil fertility. The preferred variety of summer green manure in rotation with winter wheat was preliminarily screened out as Tianjing (inoculated with rhizobia).

Key words: green manure varieties, rhizobia, agronomic traits, fresh yield, nutrient content, screen