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通过田间小区试验,在2种土壤和2个季节条件下研究了3种硝化抑制剂,氢醌(HQ),双氰胺(DCD)和硫脲(TU),对小白菜产量和某些品质的影响。结果表明,与对照相比,3种硝化抑制剂均能不同程度提高小白菜产量,尤以双氰胺的增产效果最显著,达10%左右;且3种硝化抑制剂在红菜园土上的增产效果均比冲积菜园土上显著。3种硝化抑制剂均不同程度地提高了小白菜对氮和磷的吸收,对钾没有明显影响。3种硝化抑制剂均能明显提高小白菜维生素C(Vc)含量,但只有双氰胺和氢醌能明显提高小白菜的可溶性糖含量。
Three kinds of nitrification inhibitors, hydroquinone (HQ), dicyandiamide (DCD) and thiourea (TU) were studied in field plots in two soils and two seasons to evaluate the yield and quality of Chinese cabbage Impact. The results showed that compared with the control, all three kinds of nitrification inhibitors could increase the yield of Chinese cabbage at different degrees, especially the dicyandiamide had the most obvious increase effect, reaching about 10%; and three kinds of nitrification inhibitors were on the red garden soil Increasing yield than the alluvial vegetable soil significantly. All three kinds of nitrification inhibitors improved the uptake of nitrogen and phosphorus in Chinese cabbage to varying degrees, but had no obvious effect on potassium. Three kinds of nitrification inhibitors could significantly increase the vitamin C (Vc) content of cabbage, but only dicyandiamide and hydroquinone can significantly improve the soluble sugar content of Chinese cabbage.