北京地区渗灌条件下冬小麦生长发育状况的研究

通过对渗灌条件下田间土壤水分及冬小麦生长发育状况的观测，研究了渗灌用于冬小麦灌溉对冬小麦生长发育及产量形成的影响。试验结果表明，渗灌所形成的农田水分条件对小麦地上部分干物重、叶面积及根系的生长的十分有利。渗灌可使冬小麦根系较多地分布在20－60cm土层，不仅提高了对该层土壤水分的利用，而且有利于冬小麦的生长。渗灌条件下冬小麦产量比喷灌提高12％，农田水分利用效率提高4．49kg/*hm^2.mm)。

Study on the Growth and Development of Winter Wheat under Seeping Irrigation in Beijing Areas

Based on observation for field soil water and the growing status under seeping irrigation, the effects of seeping irrigation on the growth, development and yield of winter wheat were studied. The analyzed results showed that the field soil water under seeping irrigation suited to the increase of dry-weight, development of proper leaf area, and growth of roots. More roots of winter wheat distributed in the soil layer from 20 cm to 60 cm under seeping irrigation condition, so winter wheat could make full use of soil water in the layer. Finally yield increased by 12 percent and the water use efficiency was more 4.49 kg/(hm2*mm) than that under sprinkling irrigation.