棉花边行内移不同行距组合对其产量性状的影响

The Influence of Cotton Edge Shifting Inward in Different Row Spacing Combination on its Yield Characters

试验采用1.4 m宽膜,一膜四行种植,设置5个不同行距配置的边行内移种植模式(即窄行行距分别为10、20、25、28和30 cm,宽行行距分别为60 cm和50 cm,株距均为10 cm),研究不同配置的边行与内行对棉花干物质积累和产量性状的影响。结果表明:边行内移后,边行距膜边距离在10 cm以上的三个处理,边行与内行的单株结铃数无明显差异,边行距膜边距离小于10cm的两个处理,边行的单株结铃数较内行少1.1~1.4个;各处理相互间内行的单株结铃数无明显差异,铃重和衣分亦无显著差异。试验表明边行内移技术可显著提高边行与内行的棉苗均匀度,增强边行棉株的抗逆生产能力,增加棉花产量。边行距膜边距离在10 cm以上的三个处理较边行距膜边距离小于10 cm的两个处理增产籽棉750 kg/hm^2左右。建议生产实际中,大面积推广应用棉花边行内移技术。

The experiments used1.4 m wide membrane,four lines planting of a film,five different cotton planting pat terns were setted up（The narrow row spacings were10,20,25,28 and30 cm,respectively. The broad row spacings were60 cm（Machine mining mode）and50 cm. All plant spacing was10 cm）. It studied the influence of different edge line and inside line combination on cotton dry matter accumulation and yield traits. The results showed that the boll number per plant had no obvious difference between edge line and inside line in the three handles of the distance from edge line to membrane more than 10 cm after shifting inward,the two handles of the distance from edge line to membrane less10 cm the bollnumberper plant of edge lines was less than inside lines1.1 ~ 1.4per plant;The boll numbers per plant had no obvious differences among all deals,the bollweight and lint percentage were also no significant difference. The experments showed the edge shift ing inward technology could significantly improve the plant uniformity between edge line and inside line,enhance thestress re sistance of edge line and increase cotton yield.The seed cotton yield of the three handles of the distance from edge line to mem brane more than 10 cm increased 750 kg/hm2than the other two deals. This paper suggested to popularize the edge shifting in ward technique in the actual production.