Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (17): 98-102.doi: 10.11924/j.issn.1000-6850.casb2021-0654

Special Issue: 生物技术 土壤重金属污染 水稻 园艺 耕地保护

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Improvement Effect of Different Ameliorants on Acidified Soil of Rhizoma corydalis - Rice Rotation

YANG Xiaomin(), SI Hua, GAO Peng, JIAN Hongzhong, YANG Xiao, CUI Ning, YU Zhengjun, ZHANG Genglong   

  1. Hanzhong Agricultural Technology Extension and Training Center, Hanzhong, Shaanxi 723000
  • Received:2021-06-28 Revised:2021-10-05 Online:2022-06-15 Published:2022-07-08

Abstract:

To explore the improvement effect of different ameliorants on acidified soil of Rhizoma corydalis - rice rotation, we took the rotation as the research object, set treatments of applying different soil ameliorants to Rhizoma corydalis single-cropping and Rhizoma corydalis - rice rotation, and then analyzed the soil chemical properties and the economic benefits of crop yield after harvest. The results showed that continuous application of lime, calcium-magnesium-phosphate fertilizer and conditioner of acidic soil to the Rhizoma corydalis - rice rotation could improve soil pH and exchangeable calcium, and the yield of the two crops under the rotation was significantly higher than that of single-cropping application of ameliorants to Rhizoma corydalis. The continuous application of calcium-magnesium-phosphate fertilizer and acidic soil conditioner could supplement soil potassium and increase soil exchangeable magnesium content. The continuous application of calcium-magnesium-phosphate fertilizer could also significantly increase soil available phosphorus and the pure benefits of the two crops. On the whole, in the production practice of improving acidified soil of Rhizoma corydalis - rice rotation, it is recommended to apply calcium-magnesium-phosphate fertilizer of 1500 kg/hm2 in Rhizoma corydalis cropping and 750 kg/hm2 in rice cropping to obtain good soil improvement effects and economic benefits.

Key words: Rhizoma corydalis, rice, soil ameliorant, single-cropping application, continuous application, soil chemical properties, economic benefit

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