[目的]研究攀西地区不同播种期、播种量和施肥量对西昌学院新育成的西大麦1号(Hordeum agriocrithon)生长发育和产量的影响,为该地区大麦高产栽培提供指导,并为其进一步推广提供科学依据.[方法]试验设不同播种期和播种量试验及不同氮、磷肥施用量试验.[结果]在攀西地区,西大麦1号以10月25日左右播种,播种量150 kg/hm2,施纯N量108 kg/hm2,施P2O5量113 kg/hm2,施K2O量90 kg/hm2(N∶P2O5∶K2O为1.20∶1.26∶1.00)组合效果较好.播种密度越大越易感染白粉病和叶锈病,多施或偏施尿素会导致大麦抗病性和抗逆性下降,越易感染白粉病和叶锈病;肥料处理间氮肥的施用量增加,生育期延长,但磷肥施用量对生育期影响不明显.[结论]在攀西地区,西大麦1号的适宜播期为10月25日左右,适宜播种量为150 kg/hm2,适宜的N、PO5、K2O施用量分别为108、113、90,N∶P2O5∶K2O为1.20∶1.26∶1.00.%[Objective] The purpose was to study the effects of different sowing time, sowing quantity and applying fertilizer amount on growth and development and yield of Xidamai No. 1 recently bred by Xichang College in Panxi Region, and provide a guidance for barley's high yield cultivation a scientific basis for its further generalizing. [Method] Two tests, different sowing time and sowing quantity lest and different N and P2O5 application amount test, were carried out. [Result] The best agronomy combination for planting Xidamai No. 1 in Panxi Region was as follows: Sowing in October 25, sowing quantity 150 kg/hm2, pure N, P2O, and K2O application amount 108, 113 and 90 kg/hm2 ( N:P2O5:K2O for 1.20:1.26:1.00) , Higher sowing density meaned higher risk of being infected with white powder disease and leaf rust, and tou much N fertilizer application or partial application also resulted in casily Xidamai No.1 infecting with white powder disease and leaf rust because of resistance to disease and stress decreasing. Increasing N fertilizer application amount could prolong Xidamai No. 1's growth period, while P2O5 application amount had no significant influencing on it. [Conclusion] In Panxi Region, Xidamai No. 1 's suitable sowing time is October 25, suitable sowing quantity is 150 kg/hm2, and suitable N, P2O5 and K2O application amount is 108, 113 and 90 kg/hm2 (N:P2O5:K2O for 1.20:1.26:1.00).
展开▼
