论文部分内容阅读
倒伏是小麦田中、后期常易发生的一种不良现象。小麦倒伏后,茎杆的输导组织受到挫伤破坏,养分不能向穗部输送,同时,茎叶重叠,通风不良,常易感染病虫害。倒伏严重地阻碍干物质的积累,致使产量降低,一般减产20％左右,高的达40％。并且,小麦品质变劣。倒伏的原因,除大风和品种特性影响外,主要是栽培管理不当所致。因此,在选用抗倒性强的品种,并确定适宜基本苗的基础上,防止倒伏至关重要。具体措施是:
Lodging is the wheat field, the late often prone to a bad phenomenon. After the lodging of wheat, the stem of the guide tissue damage by contusion, nutrients can not be transported to the spike, at the same time, stems and leaves overlap, poor ventilation, often susceptible to pests and diseases. Lodging severely hampers the accumulation of dry matter, resulting in lower yields, typically about 20% less yield, and 40% more high. Moreover, the quality of wheat is deteriorated. The reason for lodging, in addition to gale and variety characteristics, mainly due to improper cultivation and management. Therefore, in the selection of lodging-resistant varieties, and to determine the appropriate basic seedlings on the basis of prevention of lodging is essential. Specific measures are: