论文部分内容阅读
足墒条件下冬小麦播种时200cm土体总贮水量为619.6mm,有效贮水量为329.5mm。冬小麦播种～拔节期主要消耗0～100cm土层内土壤有效贮水;由于有效贮水能满足作物需水,因此拔节期不出现土壤水分亏缺。拔节～开花期对照(CK)耗水深度为200cm土层,起身期灌1水(Ⅰ-1)处理为160cm,其他处理为130cm;至开花期CK和Ⅰ-1处理0～60cm土层内已呈现一定程度的水分亏缺。开花～成熟期各处理200cm土体内土壤有效水含量均呈不同程度下降,但主要供水层为0～130cm土层;冬小麦成熟期除春后起身～孕穗～灌浆期(Ⅲ-1)、拔节～开花～灌浆期(Ⅲ-2)灌3水和起身～拔节～开花～灌浆期(Ⅳ)灌4水处理外,大部分处理0～80cm或0～60cm土层内均呈明显的水分亏缺。随灌水次数或灌水量的增加,土壤贮水利用率呈明显下降趋势。
At the condition of pedophile, the total water storage of 200cm soil in winter wheat planting is 619.6mm and the effective water storage capacity is 329.5mm. Winter wheat sowing ~ jointing stage mainly consumes effective soil water storage in 0 ~ 100cm soil layer; soil water deficit does not appear at jointing stage because effective water storage can meet crop water requirements. The inflorescence depth (CK) of inflorescences at inflorescence flowering stage (CK) was 200cm, and the infiltration depth was 1 cm (Ⅰ-1) and 160 cm A degree of water deficit has been demonstrated. The effective water content of soil in flowering ~ maturity stages declined to some extent in 200 cm soil layer, but the main water supply layer was 0 ~ 130 cm soil layer. The winter wheat rose from maturity to filling stage (Ⅲ-1) Flowering ~ filling stage (Ⅲ-2) Irrigation and watering ~ jointing ~ flowering ~ filling stage (Ⅳ) irrigation water treatment, most of the treatment of 0 ~ 80cm or 0 ~ 60cm soil layer showed obvious water deficit . With the increase of irrigation times or irrigation amount, the utilization rate of soil water storage decreased obviously.