秋玉米新品种引种试验初报

为筛选出适宜当地种植的高产、稳产、适应性强、抗病优质的新品种，为大面积推广提供参考依据，引进了6个玉米新品种进行试验，观察其在生长、综合抗性及产量方面的表现。试验结果表明：XD5号、XD4号品种生长旺盛、综合抗性好、穗大粒多产量高、色泽金黄、籽粒硬粒，是适宜大面积推广的品种；XD1号、XD2号、XD3号品种长势偏弱，茎秆相对当前推广品种偏小，综合抗性差，产量比当前当家品种偏低，不适宜在当地推广；同时，适当增加种植密度，能提高产量。

Report in the introduction experiment of new autumn maize varieties

In order to screen out new varieties of high-yield, stable yield, strong adaptability and fine disease-resistance suitable to local cultivation, provide references for large-scale extension, six new maize varieties were introduced and tested to observe their representations in tance and yield. The results show that XD5 and XD4 have the characters of growth, integrated resis- strong growth, good integrated resistance with big ear, more grains, high-yield, golden color and hard seed, which are varieties suitable to large-scale extension. XD1, XD2 and XD3 have the characters of weak growth, poor integrated resistance, smaller stalk and lower yield compared to CK, which are not suitable to local exten- sion. Meanwhile, proper increase of planting density can promote the yield.