SF311 The variety belongs to medium-late maturity large-shell long-grain hybrid with a growth period of 105 days. It sprouts regularly, has developed roots, strong stems, generally about 220 cm in height, flat leaves, beautiful plants, large flower discs, large-shell long-grain grains, black and bright color with irregular white stripes, thin skinned kernel, drought tolerant, salt and alkali tolerant, barren tolerant, vigorous growth and Easy to lodge. Artificial pollination has high seed setting rate, strong adaptability, great potential of increasing production and good commodity characteristics. It is the most popular variety in stir-frying enterprises up to now.