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Effects of mechanical transplanting of rice with controlled release bulk blending fertilizer on rice yield and soil fertility.

ZHANG Xuan, DING Jun-shan, LIU Yan-ling, GU Yan, HAN Ke-feng, WU Liang-huan   

  1. (Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition/Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health/College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China)
  • Online:2014-03-18 Published:2014-03-18

Abstract: A2year field experiment with a yellow-clay paddy soil in Zhejiang Province was conducted to study the effects of different planting measures combined with different fertilization practices on rice yield, soil nutrients, microbial biomass C and N and activities of urease, phosphatase, sucrase and hydrogen peroxidase at the maturity stage. Results showed that mechanical transplanting of rice with controlled release bulk blending (BB) fertilizer (BBMT) could achieve a significantly higher mean yield than traditional manual transplanting with traditional fertilizer (TFTM) and direct seeding with controlled release BB fertilizer (BBDS) by 16.3% and 27.0%, respectively. The yield by BBMT was similar to that by traditional manual transplanting with controlled release BB fertilizer (BBTM). Compared with TFTM, BBMT increased the contents of soil totalN, available N, available P and microbial biomass C, and the activities of urease, sucrase and hydrogen peroxidase by 21.5%, 13.6%, 41.2%, 27.1%, 50.0%, 22.5% and 46.2%, respectively. Therefore, BBMT, a simple high-efficiency rice cultivation method with use of a light-weighted mechanical transplanter, should be widely promoted and adopted.