不同施肥量及施肥运筹对大麦产量及农艺性状的影响

Effects of Different Fertilization Levels and Application Methods on Yield and Agronomic Traits of Barley

为优化巴中地区大麦种植施肥措施,研究了不同施肥量对甘啤8号产量的影响。试验设置以基施225 kg/hm^(2)复合肥为对照(CK),处理分2类[基施+追施(A)与单纯基施(B)],每类处理又分4个水平。结果表明:大麦产量与株高、穗长、成穗率、结实率、穗粒数、穗数、单株茎蘖数呈极显著正相关关系,与千粒质量呈显著正相关关系;B_(1)、B_(2)、B_(3)、B_(4)处理下,大麦产量随基肥使用量的增加而增加,B_(4)处理下大麦产量最高,为4882.4 kg/hm^(2),较CK显著增产166.0%;当总施肥量在450、600 kg/hm^(2)时,产量表现为A1比B_(1)高、A_(2)比B_(2)高,超过600 kg/hm^(2)时则相反,即足量基肥有助于巴中地区大麦产量与效益提高。

In order to optimize the fertilization measures for barley cultivation in Bazhong area,the effect of different fertilizer application rates on the yield of Ganpi No.8 was investigated.The experiment was set up with 225kg/hm^(2)compound fertilizer as the control(CK),and was divided into 2 types of treatments[basal+topdressing(A)and versus basal alone(B)].Each type of treatment was further divided into 4 levels.The results showed that yield was positively correlated with plant height,spike length,spike formation rate,seed setting rate,number of grains per spike,number of spikes,number of stems per plant,and significantly positively correlated with thousand-grain weight.Under B_(1),B_(2),B_(3)and B_(4)treatments,barley yield increased with the increase of basal fertilizer application rates,and the barley yield under the B_(4)treatment was the highest,with 4882.4 kg/hm^(2),which was 166.0%more than that of the CK.When total fertilization amount was 450 kg/hm^(2)and 600 kg/hm^(2),the yield of A1 was higher than that of B_(1),A_(2)was higher than B_(2),and the opposite was true when it was more than 600 kg/hm^(2).Sufficient amount of basal fertilizer was helpful to increase the yield of barley.