果园节水灌溉技术的研究

果园节水灌溉技等不均现象的发生,发挥果树吸水能力,保持水土的良好状态.运用孔口出流公式、伯努力方程、沿途泄流公式及损失规律,建立了泄流管路的通用方程组.由此得到泄流管路作用水头的沿程变化规律,根据作用水头确定配水管各点所连接微管的管径与长度,以保证沿程配水的均匀性.并运用该方法计算工程实例,验证方程组的有效性,为工程设计提供依据.

On Techniques of Water-saving Irrigation in Orchards

The key of water-saving irrigation in orchard is that water should be distributed to every fruit trees evenly. Avoid waterlog and drought, make the trees absorb the water fulty, keep and natural environment in good condition. By means of formula of orifice come out, Bernoulli equation, formula of discharge along way and law of lose, general group of equation of discharge flow was established. The changing law of water head of discharge pipe along the way was gotten .The diameter and length of tiny pipe could be determined by water heads, The uniform of discharge water along distribute pipe was realized. The engineering example was calculated by using this method, the effect of group of equation was tested and verified. This provids a foundation for engineering design.