啤用大麦品种扬农啤10号高产栽培技术研究

Study on High-Yielding Cultivation Techniques for Malting Barley Variety Yangnongpi 10

以扬农啤10号为材料,设计了氮肥用量和密度2个单因素试验,同时根据生产实践设计播期与密度的双因素协同试验,分析密度、氮肥用量及播期与密度协同等处理对扬农啤10号茎蘖动态和产量结构的影响。结果表明,扬农啤10号随着施氮水平的增加,其穗数、千粒重和产量均有所提高,在基本苗15万/667 m^2、纯氮用量18.0 kg/667 m^2下,产量最高为486.44 kg/667 m^2。在施N量为14 kg/667 m^2、基肥∶蘖肥∶拔节穗肥为7∶1∶2条件下,11月2日播种,以基本苗16万/667 m^2的产量最高;在随播期推迟适当增加基本苗的情况下,10月20日—11月14日期间播种,以10月25日播种、基本苗15万/667 m^2的产量最高,为444.23 kg/667 m^2;低密度早播或高密度迟播均不易获得高产。

In order to develop high - yielding cultivation techniques for new barley variety Yangnongpi 10, it was planted in the field on Fangqiang Farm, Jiangsu Province in the growing season of 2012 -2013. Three experiments （Ⅰ -Ⅲ） were conducted to examine the effects of planting date, planting density, and the amount of nitrogen fertilizer on stem tiller dynamic and yield structure of Yangnongpi 10; and Experiments Ⅰ, Ⅱ, and Ⅲ involved six planting dates, five planting densities, and three levels of nitrogen fertilizer, respectively. The results showed that Yangnongpi 10 requires a higher amount of nitrogen fertilizer for its growth and developemnt. Application of a higher amount of nitrogen fertilizer led to increases in the number of spikes, thousand - kernel weight, and yield. The highest yield of Yangnongpi 10 was obtained under the following conditions ： the planting density of 160, 000 basic seedlings/667 m^2, the ni- trogen level of 14kg/667 m^2 , and in the N - fertilizer management pattern of fertilizer/tillering fertilizer/jointing panicle fertilizer = 7 ： 1 ： 2. With the suitable number of basic seedlings, the optimum amount of nitrogen fertilizer was 14. 0 kg/667 m^2 and the optimum planting date was between Oct. 25 and Nov. 4. Neither an earlier nor a delayed planting date favored yielding.