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通过田间小区试验的方法,研究了粘土施加量(0、150、300、600t hm-2)及施用方式(表施、底施)对风沙土保水性及玉米生长状况的影响。结果表明,与对照组相比,在施用方式一致时,粘土施加量在C3(600t hm-2)水平时可以明显提高沙土保水性及玉米的产量,并且施加量在C1(150t hm-2)水平时可以显著地提高玉米叶片的SPAD值以及促进叶枕株高的生长;在粘土施用量(<150t hm-2)较少时,底施的效果更好。
The effects of clay application (0,150,300,600 t hm-2) and application methods (top dressing and bottom dressing) on the water-holding capacity of wind-blown sandy soil and the growth of maize were studied through field plot test. The results showed that compared with the control group, when the application method was the same, the application of clay at the level of C3 (600t hm-2) could significantly improve the soil water holding capacity and yield of maize, and the application rate was at C1 (150t hm-2) The level of SPAD of maize leaves can be significantly increased and the growth of plant height can be promoted. When the amount of clay applied is less than 150t hm-2, the effect of bottoming is better.