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目的探讨稻田间歇灌溉法控制蚊蚴效果及其对水稻生长和产量的影响。方法在其他措施完全相同的前提下,以土壤水势为指针,对试验田、对照田分别实行间歇和常规灌溉,于水稻生长全程定人、定期、定点采用吸捕法调查按蚊和库蚊幼虫密度;以植株性状、叶龄进程、茎蘖动态、产量结构和实际产量等指标评判水稻长势和产量。结果试验田中华按蚊和三带喙库蚊幼虫平均密度分别比对照田减少10.32条/m2和13.93条/m2,防制率分别达78.84%和72.14%;试验田比对照田每667m2平均增产22.5kg,节水187.4m3,增收节支75.78元。结论稻田间歇灌溉不仅可有效控制蚊蚴孳生,还能节水、省电、增收。
Objective To investigate the effects of intermittent irrigation in paddy fields on the control of mosquito larvae and their effects on the growth and yield of rice. Methods Under the same conditions of other measures, soil water potential was used as a guideline to intermittently and routinely irrigate the experimental field and the control field respectively. The density of the anopheles and Culex pipiens pallens The growth and yield of rice were evaluated by plant traits, leaf age, stem and tiller dynamics, yield structure and actual yield. Results The average density of Anopheles sinensis and Culex tritaeniorhynchus decreased by 10.32 / m2 and 13.93 / m2, respectively, with the control rates of 78.84% and 72.14%, respectively. The average yield of experimental area was increased by 22.5kg per 667m2 , Saving 187.4m3, increasing income and saving 75.78 yuan. Conclusion Intermittent irrigation in paddy fields can not only effectively control the breeding of mosquito larvae, but also save water, save electricity and increase income.