微咸水灌溉对作物生长影响的试验研究

Experimental Study on Effect of Crop Growth with Light-saline Water Irrigation

在田间试验条件下,采用正常灌溉定额和淋洗灌溉定额2种灌溉水平,对小麦、玉米、葵花3种作物进行了不同灌溉水矿化度处理的灌溉试验,对3种作物的生长过程、地上部干物质积累规律、作物产量等进行了研究。结果表明:小麦在2种灌溉定额下的耐盐能力为4.5 g/L。正常定额下玉米的耐盐能力为3 g/L,葵花为5 g/L。淋洗定额下玉米的耐盐能力为3.5 g/L,葵花为7 g/L。

Field irrigation experiment of different salt concentration is conducted for wheat, maize and sunflower with normal quota and leaching quota in this paper, and study on crop growth, accumulation law of dry matter above ground and crop yield of 3 crops. The results showed that the salt tolerance threshold of wheat in two kinds of irrigating quota is 4.5 g/L. In the normal quota, the salt tolerance threshold of maize is 3 g/L, and it is 5 g/L for sunflower. In the leaching quota, the salt tolerance threshold of maize is 3.5 g/L, and it is 7g/L for sunflower.