Belt Uniform Sowing Pattern Boosts Yield of Different Winter Wheat Cultivars in Southwest China

The relationship between the sowing patterns and yield performance is a valuable topic for food security. In this study, novel belt uniform (BU) pattern was reported, field experiment with four winter wheat cultivars carried out over three consecutive growing seasons to compare dry matter accumulation, harvest index (HI), grain components under BU line dense (LD) [BU narrow (15 cm) spacing; wide (20 LD (33.3 row (16.6 spacing]. Four produced higher mean (GY), above-ground biomass (AGB) spike number (SN) per m2 than in all seasons. However, stability did not increase improved yield. HI change patterns, contribution of (84%) more 5-fold that (16%). Principal component correlation analyses indicated positively correlated aboveground SN, while 1000-grain weight were We concluded (1) achieved potential but further improve stability; (2) increasing accumulation without changing drove improvements SN spike, thus