不同密度与施氮量对夏播黔玉3号产量的影响

采用随机区组设计,研究不同施氮量和密度对夏播黔玉3号产量的影响。结果表明:产量随密度和施氮量的增加而提高,密度、肥料、密度×肥料、区组间、处理间均达极显著水平。在同一密度条件下,产量随施氮量的增加而提高,在同一施氮量条件下产量随密度的增加而增加。其中,以定苗3000株/667m2、施氮量28.1kg/667m2为最好,产量达512.82kg/667m2。在同一密度条件下,植株的高度、穗长、穗粗、穗行数、行粒数、百粒重、出籽率,随施氮量的增加而增加,茎粗、秃尖随密度和施氮量的增加而有所下降。

Effects of Different Density and Nitrogen Amount on Yield of Qianyu 3 Planted in Summer Season

The randomized block design was used to investigate effects of different density and nitrogen amount on yield of Qianyu 3 planted in summer season.The results show that the yield increases with increase of density and nitrogen amount.There are the significant difference among density,application amount,density application amount,blocks and treatments.The yield increases with increase of nitrogen amount under the same density and the yield increases with increase of density under the same nitrogen amount.The yield with 3000 plants/667m 2 of density and 28.1kg/667m 2 of nitrogen is up to 512.82kg/667m 2.The plant height,ear length,ear diameter,number of ear row,grain number per row,100-grain weight and rate of producing grain increase with increase of nitrogen amount under the same density.The stem diameter and empty tip decrease with increase of density and nitrogen amount.