论文部分内容阅读
为促进北京市密云地区春播玉米品种更新换代,实现玉米产业可持续发展,2004年对中单28、德玉1号、农大4967、高油4515的产量性状,抗病抗倒、农艺性状和果穗性状进行了分析,结果表明:中单28产量高,生育期适宜,株高穗位合理,抗病性强,抗倒性好,可以作为密云县推广种植的苗头品种进一步进行不同年份,不同试点的示范种植。2005-2006年进行了不同试点的试验示范,结果表明:中单28在密云地区相对农大108的增产效果显著,在不同地区,不同年份均表现出高产、稳产以及很好的抗逆性,适宜在密云地区推广种植,能够代替农大108作为密云地区的春播玉米主推品种。高产栽培试验表明:中单28在3 600～3 900株/667 m2的密度下产量最高,且倒伏率、空秆率都较低,是最适宜的种植密度;同时通过分析不同施肥模式与灌水模式下中单28的农艺性状、抗性、投入、产量及效益得出,常规施肥模式下中单28株高穗位合理,抗逆性较好,投入低,经济效益高;雨养栽培模式下中单28株高较低,投入低,效益高,是节支增效的理想栽培模式,可以做到增产增收。探索推广模式,帮助企业决策,加大宣传品种力度,加快推广进程。
In order to promote the replacement of spring sowing maize varieties in Miyun area of Beijing and realize the sustainable development of maize industry, the yield traits, disease resistance and lodging resistance, agronomic traits and ear of Zhongdan 28, Deyu 1, Nongda 4967, The results showed that Zhongnanye 28 had the highest yield, suitable growth period, reasonable plant height and spike position, strong disease resistance and good lodging resistance. It could be used as the seedling for popularization in Miyun County in different years and in different experimental sites Demonstration of planting. Experiments and demonstrations of different pilot projects were carried out in 2005-2006. The results showed that Zhongdan 28 had a significant yield increase effect in comparison with Nongd 108 in Miyun, and showed high yield, stable yield and good stress resistance in different regions and years, which was suitable Promote planting in Miyun area, to replace Nongda 108 as the main push varieties of spring sowing in Miyun area. High-yielding cultivation experiments showed that Zhongdan 28 was the most suitable planting density under the density of 3 600 ~ 3 900/667 m2 with the lowest yield and empty stalk ratio. At the same time, by analyzing different fertilization modes and irrigation Under the model, the single agronomic traits, resistance, input, yield and benefit of Zhongdan 28 were obtained. Under the conventional fertilization mode, 28 high-ear plants in single-cropping were reasonable, with good resistance, low investment and high economic benefit. Rain- Under the single 28 low plant height, low investment, high efficiency, is an ideal mode of cultivation and efficiency of cultivation, can increase production and income. Explore the promotion model to help enterprises make decisions, step up efforts to promote variety, speed up the promotion process.