滴灌技术在重盐碱地上种植棉花的试验

主要用滴灌技术，对含盐量达20．0g/kg的重盐碱土进行改良和利用，并产生一定的经济效益，累积脱盐率：0－30cm83.5%,30-60cm75.5%,60-100cm46.1%,其中0－60cm为79．9％。灌溉量200m^3/666.7m^2，产皮棉1998年为20．4kg/666.7m^2，1999年为66．1kg/666.7m^2,2000年为91.1kg/667m^2。通过4年连续试验，初步得出，采用滴灌技术在重盐碱地上种植棉花是成功的，是今后改良和利用重盐碱地的一条新途径。

An Experiment of Cultivating Cotton with Drop Irrigation Technology in Heavy Saline Soil

An experiment of cultivation cotton on the heavy saline soil was conducted from 1998 to 2000. Advanced drop irrigation technology was used to improve the heavy saline soil. Results show that desalinization rate is 83.5% in 0～30cm soil, 75.5% in 30～60cm soil, 46.1% in 60～100cm, and 79.9% in 0～60cm respectively. Under the irrigation condition of 200m3/667m2, the lint production is 20.4kg/667m2 in 1998, 66.1kg/667m2 in 1999, and 91.1kg/667m2 in 2000 respectively. It is concluded that drop irrigation technology is an ideal methord for cultivation cotton on heavy saline soil and a good way for improving saline soil.