Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (30): 127-134.doi: 10.11924/j.issn.1000-6850.casb20191100803

Special Issue: 水稻

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Spraying NATIVO 75% Water Dispersal Granules: Regulation of Nitrogen Absorption and Growth of Rice

Lv Liang1(), Chang Xiangqian1, Yang Xiaolin1, Yuan Bin1, Zhou Chunhua2, Zhang Shu1()   

  1. 1Institute for Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan 430064
    2Agricultural Technology Promotion Center, Qichun County, Huanggang City, Hubei Province, Qichun Hubei 435300
  • Received:2019-11-07 Revised:2019-11-28 Online:2020-10-25 Published:2020-10-16
  • Contact: Zhang Shu E-mail:lvlianghbaas@126.com;ricezs6410@163.com

Abstract:

The aim is to explore the mechanism and effect on rice growth, nitrogen absorption and utilization efficiency by spraying NATIVO 75% water dispersal granules. In this study, field plot experiments were carried out, fertilization conditions such as total N, semi-N, and non-N were designed, and the effects of spraying NATIVO in different periods on rice nitrogen absorption, utilization, and rice yield were analyzed. The results showed that the chlorophyll SPAD value was significantly increased when spraying NATIVO twice at the end of rice boosting stage and rice full-heading stage under the condition of nitrogen application. At the end of rice boosting and full-heading stage, spraying NATIVO on rice leaf surface twice could significantly increase the leaf area index, the weight of thousands of grains, and the solid seed rate of rice compared with the check. The results also showed that spraying NATIVO on the rice leaf surface could obviously promote the absorption of nitrogen in rice, improve the utilization efficiency of nitrogen, and obtain higher rice yield. In conclusion, spraying NATIVO on the leaf surface at rice boosting and full heading stage can promote the growth of rice, improve the nitrogen utilization efficiency, and obtain higher rice yield.

Key words: NATIVO 75% water dispersible granules, rice, nitrogen, utilization effect

CLC Number: