石灰氮消毒对温室土壤氮钙含量和番茄生长情况影响

Effects of Lime Nitrogen Disinfection on Soil Nitrogen and Calcium and Tomato Growth in Greenhouse

摘要:

以番茄瑞菲品种为试材，在越夏栽培前对棚室进行石灰氮消毒，不施用石灰氮为对照（CK），研究石灰氮消毒对土壤全氮、碱解氮、交换性钙含量及番茄生长情况的影响。结果表明，与CK相比，石灰氮处理后的茎粗增加了30.69%（生长前期）～21.43%（生长中期），叶长增加15.9%，株高、叶片数和开花数没有显著变化，土壤全氮、碱解氮和交换性钙含量分别增加0.43 g/kg,52.15 mg/kg和7.9 cmol/kg，生产结束后仍分别比CK高出0.65 g/mg、36.65 mg/kg和7.47 cmol/kg。石灰氮处理的综合发病率下降21.5%。

Abstract:

Taking tomato Ruifei cultivar as test material, the effects of lime nitrogen disinfection on soil total nitrogen, alkali-hydrolyzed nitrogen, exchangeable calcium and tomato growth were studied in the shed before summer cultivation and without lime nitrogen as control（CK）. The results showed that, compared with the control, the stem diameter increased by 30.69%（early growth stage） to 21.43%（middle growth stage） and leaf length increased by 15.9%, and there were no significant change on plant height, leaf number and flower number. The contents of total nitrogen, alkali-hydrolyzed nitrogen and exchangeable calcium increased by 0.43 g/kg, 52.15 mg/kg and 7.9 cmol/kg,respectively, and were still 0.65 g/mg, 36.65 mg/kg and 7.47 cmol/kg higher than those of CK, respectively. The combined incidence of lime-nitrogen treatment decreased by 21.5%.