品种、播期、播量和施肥量对青饲油菜鲜草产量的影响

Effect of The Variety,SowingDate,SeedingRate and Fertilizer Application on biomass Yield of forage rape

试验对湖南省引进的3个"双低"油菜品种与山油2号进行对比栽培试验,在开花前收割鲜草,观察各品种的生物产量差异。结果表明:4个品种中平均鲜草产量最高的是沣油823,平均鲜草产量为7648kg/亩。并对沣油823进行不同播期和不同播量及施肥量对鲜草产量影响的比较试验。结果为:6月20日播种较7月20日播种早20天进入收获期,亩产量也高出771kg,8月20日播种未能进入收获期,产量也明显下降。当播量为1.5kg、施肥量为75kg/亩时,小区产量最高,鲜草产量达到10172kg/亩。

The effects of were studied, included three different varieties on the biomass ＂double -- low＂ rapeseed （Brassica yield harvested before flowering napus） varieties introduced from Hunan province and Shanyou NO.2（ CK ）.The results showed that the hightest yield 7,648Kg/ 667m2 is the Fengyou NO. 823. The effects of different sowing date, seeding rate and fertilizer on biomass yield of Fengyou NO. 823 were studied. The results as follows- Fengyou NO. 823 so- wing on June 20 had the highest biomass yield and 20 days ahead of harvest compared to the rape sowing on July 20.the rape sowing on August 20 couldn＇t harvest due to the short growth period. Under the conditions of seeding 1.5kg/667m2 rape and applying 75kg/667m2 fertilizer,Fengyou NO. 823 had the highest polt yield,10172kg/667m2.