Effects of Different Straw Mulching Methods on Regulating Soil Temperature and Their Impacts on Bamboo Shoot Yield and Economic Benefits
[Objective]This study aims to investigate the impact of different straw mulching methods on surface warming and bamboo shoot yield.[Method]Six treatment groups were established for the study: no cover (CK), straw + rice bran (JL), straw + urea composting agent + rice bran (JLNF), straw + organic fertilizer composting agent + rice bran (JLOF), straw + urea + rice bran (JLN) and straw + organic fer-tilizer + rice bran (JLO), continuously monitoring surface temperature, shoot emergence and other indicators.[Result]The results demonstra-ted that treatments utilizing organic fertilizer or urea to adjust the carbon-to-nitrogen ratio of straw, along with the application of composting agents, exhibited the best warming effects. In January, the highest temperatures were recorded in the JLOF and JLNF treatments, reaching 24.25 and 21.70 ℃, respectively. The overall temperature variation trend across treatments was as follows: JLOF>JLNF>JLO>JLN>JL>CK. Correspondingly, the JLOF and JLNF treatments also yielded the highest bamboo shoot production, with 47355 and 47190 kg/hm2, respec-tively.After cost and output accounting, the final economic benefit trend of each treatment is: JLNF>JLOF>JLN>JLO>JL. Compared to the JL treatment, the JLNF treatment exhibited a remarkable increase in economic benefit with a gain of 68940 yuan/hm2, reaching 627555 yuan/hm2. [Conclusion]On the basis of the straw rice husk double coverage model, the effective way to promote the early emergence of bamboo shoots and improve their economic benefits is to adjust the carbon nitrogen ratio of straw by adding organic fertilizer or urea external-ly, while also applying a ripening agent.
Bamboo shootsOrganic material mulchingCarbon-to-nitrogen ratioComposting agentYield
万方数据
维普
