石灰氮对设施番茄根际土壤微生物数量及产量和枯萎病的影响

Study on the Influence of Calcium Cyanamide on Soil Microbial Quantity,Yield and Fuasrium wilt of Greenhouse Tomato

以塑料大棚番茄为对象,研究石灰氮不同施用量(400kg·hm-2、800kg·hm-2、1 000kg·hm-2)对番茄根际土壤微生物数量及其生长、产量和枯萎病的影响。结果表明,施用石灰氮处理后,整个处理期的各类微生物总数处理均明显高于对照,尤以施用量为800kg·hm-2的处理效果最好,土壤中的细菌、真菌和放线菌总数分别比对照提高40.38%、45.58%和43.74%,同时促进了植株茎粗和株高的生长;与对照相比,枯萎病发病率降低5.3%,产量提高13.6%。说明适量的石灰氮处理有利于土壤微生物数量的累积,对枯萎病也有一定的防控作用。

Effects of different treatments of calcium cyanamide （including 400 kg ·hm^-2, 800 kg ·hm^-2 ,1 000 kg·hm^-2） on growth, yield of tomato and Fuasrium wilt of rhizosphere soil were studied with green house cultivated tomato as the materials. The results showed that microorganisms are significantly higher than the control under calcium cyanamide treatment in the entire processing period, especially, the treatment group of 800 kg ·hm^-2 was the most efficient, the bacteria, fungi and actinomycetes in the soil were increased by 40.38%, 45.58% and 43. 74% respectively, and the stem diameter and stem length accelerated in the meantime; compared with control group, the inci- dence of Fuasrium wilt was reduced by 5.3%, and the yield was increased by 13. 6%. The results showed that the moderate amount of calcium cyanamide treatment was beneficial to the accumulation of soil microbe quantity, and also had certain control effect on Fuasrium wilt.