β-罗勒烯对水稻二化螟的防治效果及其对产量影响的研究

Research on the Control Effect of β-Ocimene on Rice Stem Borer and Its Effect on Yield

摘要: β-罗勒烯是一种能诱导植物产生防御反应的植物通讯信号分子。本文是为了探究β-罗勒烯对水稻二化螟的防治效果及其对产量影响的研究。在大田条件下，同时分析了β-罗勒烯与常规化学农药对水稻二化螟的防治效果以及对水稻产量的影响。大田试验结果显示：经β-罗勒烯处理后，水稻的生长发育和农艺性状均未受到影响，并且β-罗勒烯对水稻二化螟的防治效果优于化学农药，早期枯鞘株率与后期白穗株率均低于空白对照，对枯鞘与白穗的防效可达56.81%、41.33%，相比于化学农药早期枯鞘株率降低了2.15%；后期白穗率相对于化学农药降低了0.7%。β-罗勒烯与对照相比水稻产量提升了16.83%，与化学农药无显著差异。以上结果均表明，β-罗勒烯在防治水稻二化螟方面具有显著功效。本研究为绿色防治水稻二化螟提供了新的途径。

Abstract: β-Ocimene is a plant communication signal molecule capable of inducing defense responses in plants. This paper aims to study the control effect of β-basil on rice dicarborer and its effect on yield. Under field conditions, the control effects of β-Ocimene and conventional chemical pesticides on the Chilo suppressalis in rice and their influences on rice yield were analyzed simultaneously. The field experiment results indicated that the growth and agronomic traits of rice were not affected after treatment with β-Ocimene. Moreover, the control effect of β-Ocimene against the Chilo suppressalis in rice was superior to that of chemical pesticides. The rates of early dead sheath plants and late white panicle plants were both lower than those of the blank control. The control efficacy against dead sheath and white panicle could reach 56.81% and 41.33%, respectively. Compared with chemical pesticides, the rate of early dead sheath plants was reduced by 2.15%; the rate of late white panicle plants was 0.7% lower than that of chemical pesticides. The rice yield increased by 16.83% with β-Ocimene compared to the control, and there was no significant difference from chemical pesticides. The above results all suggest that β-Ocimene has significant efficacy in controlling the Chilo suppressalis in rice. This study provides a new approach for the green control of the Chilo suppressalis in rice.