水分调节剂DY-ET100对番茄产量、品质及水氮在土壤中扩散的影响

Effects of Water Regulator DY-ET100 on Tomato Yield and Quality and Diffusion of Water and Nitrogen in Soil

为解决水分在土壤中横向扩散范围小和硝态氮淋溶等问题,以水分调节剂DY-ET100为供试材料,以清水、渴以友为对照,研究和对比了水分调节剂DY-ET100的添加对水分在不同土壤中的扩散情况及对硝态氮淋溶和番茄产量及品质的影响。结果表明,在掺沙和未掺沙黏土中添加水分调节剂DY-ET100较清水处理番茄果实中VC含量分别显著提高12.50%和20.51%;添加DY-ET100的处理使距滴头0~30 cm范围内的水分在土壤中分布更加均匀,滴灌时水分扩散半径较清水和渴以友分别增加22.53%和12.33%;在掺沙和未掺沙黏土中较清水处理硝态氮累积量增加41.21%和18.83%;同时减少硝态氮的淋溶损失量,在掺沙和未掺沙黏土较清水处理硝态氮淋溶损失降低7.53%和8.07%。研究为水分调节剂的使用推广提供了数据支撑。

In order to solve the problems of the small lateral diffusion range of water in the soil and the leaching of nitrate nitrogen,the water regulator DY-ET100 was used as the test material,with the water and thirst as a control.The effects of nitrogen addition on the diffusion of water in different types of soil and nitrate nitrogen leaching and tomato yield and quality were studied.The results showed that the addition of moisture regulator DY-ET100 to sand-doped and non-sand-doped clay significantly increased the VC contents of tomato fruits by 12.50%and 20.51%,respectively.The treatment with DY-ET100 resulted in the more evenly distribution of water in soil of the 0~30 cm distance from the dripper.The water diffusion radius during drip irrigation were 22.53%and 12.33%higher than that of clear water and thirst.The accumulation of nitrate nitrogen in sand-doped and non-sand-doped clay was increased by 41.21%and 18.83%respectively compared with the water treatment.At the same time,the leaching loss of nitrate nitrogen was reduced by 7.53%and 8.07%respectively in sand-doped and un-sand-doped clays compared with the water treatment.This study provided data support for the promotion of water regulators.