| With oat variety Baiyan -1 as material ，using plot contrast test and multi district investigation method,
studies were conducted on the effect of the sowing time，sowing rate, fertilizer and soil salt content on growth and yield of oat. The results showed that:(1) With the delayed sowing date，the number of days from sowing to emergence and the days of growth period reduced gradually in each treatment，the yield in treatment B3 got 260. 4 kg/667m2，increased by 15.5%，6.9%，4.6% and 10.0% compared with those in treatments B1, B2, B4 and B5. (2) The seeding rate of 8.0 kg/ 667m2 in the treatment C3 was appropriate， in which the yield got 372. 0 kg/667m2，increased by 9. 3%, 5.0%，5.4% and 16.4% compared with those in treatments C1, C2, C4 and C5. (3) On the premise that the total fertilization amount remained unchanged, the yield got 250 kg/ 667m2 if both nitrogen and phosphorus were used as base-ferilizer, while the yield increased slightly if 40% nitrogen was applied for tillering; Adding 5. 0~10.0 kg/ 667m2saline alkali resistant agent increased the oat yield by 12.5%~17.1%. (4) As oat suffered saline alkaline harm，the yield reduced because the growth and development were inhibited, the plant height and 1000-grain weight decreased sig-nificantly，and panicles harvested per unit area，boll number and grain number decreased significantly. |