›› 2020, Vol. 32 ›› Issue (9): 1656-1664.DOI: 10.3969/j.issn.1004-1524.2020.09.14

• Plant Protection • Previous Articles     Next Articles

Demonstration on rice pests control by fertilizer regulation technique in different geographic rice growing areas of Zhejiang Province

ZHENG Xusong1, ZHONG Liequan2, WANG Huifu3, CHEN Fangjing4, CHENG Liping5, XU Qiqiang6, LI Yang7, ZHONG Xuhua8, LYU Zhongxian1,*   

  1. 1. Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China;
    2. Taizhou Station of Plant Protection, Taizhou 318000, China;
    3. Institute of Ecological Environment, Taizhou Academy of Agricultural Sciences, Taizhou 317000, China;
    4. Jingning Station of Plant Protection, Jingning 323500, China;
    5. Lizhou Subdistrict of Yuyao City, Yuyao 315402, China;
    6. Longquan Station of Soil Fertilizer and Plant Protection, Longquan 323700, China;
    7. Lishui Station of Soil Fertilizer and Plant Protection, Lishui 323300, China;
    8. Rice Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
  • Received:2020-04-03 Online:2020-09-25 Published:2020-10-10

Abstract: The practice of fertilizer regulation technique (FRT) for rice pests control in single cropping rice season was carried out in different geographic rice growing areas of Zhejiang Province, including paddy fields in Yuyao (plain), Linhai (hill), Longquan (basinin mountain area) and Jingning (terrace), with rice varieties of Zhejing 88, Yongyou 18, Yongyou 1540 and Zhongzheyou 2838 planting, respectively. FRT guideline included reducing nitrogen, applying less nitrogen in early season, increasing potassium and optimizing the ratio of nitrogen, phosphorus and potassium, and its effects on rice agronomic characters and yield, and main diseases and insect pests were compared with those using local farmers' traditional fertilization. The results showed that FRT could obviously reduce the occurrence of rice main diseases and insect pests. On average, the planthopper density, leaf folded rate by leaffolder, and rates of rice false smut and sheath blight were decreased by 64.79%,30.57%,14.76% and 64.82%, respectively. In Yuyao, Linhai and Longquan, average rice yields were increased by 5.88%, even though the average nitrogen and phosphorus fertilizer input were reduced by 19.31% and 31.80%, respectively. Meanwhile, the partial factor productivity from applied nitrogen (PFPN) were increased by 50.26%, 28.93% and 44.29%, respectively. In the terrace area of Jingning, FRT led to slight yield loss, and the PFPN was decreased by 2.62%. However, when basic seedlings were increased by 20% under FRT, the rice yields were increased by 16.67% and the PFPN was increased by 18.05%. All these results indicated that FRT could not only reduce nitrogen application, reduce the occurrence of major diseases and pests in rice, but also increase production. In conclusion, FRT was applicable in all rice planting areas in Zhejiang Province.

Key words: single cropping rice, rice pests control by fertilizer regulation technique, nitrogen fertilizer, plant diseases and insect pests, yield

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