敏感性分析在板栗水分敏感期试验中的应用

Application of sensitivity analysis in chestnut water sensitive period test

确定作物水分敏感期是制定节水高产灌溉制度的基础,在灌溉试验数据少的情况下,使用经济评价的敏感性分析方法可以快速得到作物的产量水分敏感期。2015—2016年在宽城县塌山乡尖宝山村进行了为期两年的板栗灌溉试验,计算了板栗的敏感系数,并排列了板栗水分敏感期的顺序为促花期、膨大期,灌水顺序为展叶水、促花水、膨大水。结合灌溉水源的保证程度可以制定适用于不同降雨水文年的灌溉策略,为板栗高产种植提供科学灌溉依据。

The basis for establishing the irrigation regime for high yield and water saving is to determine the sensitive period of crop water. Under the condition of little irrigation test data, the sensitive period of crop yield water can be quickly obtained by using the sensitivity analysis method of economic evaluation. Chestnut irrigation experiments were carried out in Jianbaoshan Village, Tashan Township, Kuancheng County in 2015 and 2016. The sensitive coefficient of chestnuts was calculated, and the order of chestnut water sensitive period was flowering promotion period and then swelling period and finally the order of irrigation was leaf expansion water, flower promotion water and swelling water. Combined with the guarantee degree of irrigation water source, irrigation strategies suitable for different rainfall hydrological years can be formulated to provide scientific irrigation basis for chestnut high-yield cultivation.