Effects of Cultivation Patterns on Photosynthesis, and Yield and Its Components of Shanlan Upland Rice

KE Zhi; HUNAG Mengyu; LIU Zhichao; HE Meidan; GUO Ting; ZENG Danqi; WANG Ziniu; WANG Yueqi; YUAN Qianhua

doi:10.15886/j.cnki.rdswxb.2019.04.005

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The net photosynthetic rate of flag leaf at heading, full heading and milky ripening stages, stem and leaf characteristics and yield of Shanlan upland rice were measured under the four cultivation methods: flooding irrigation, moistening irrigation, dry land sprinkler irrigation and traditional rainfed farming. The results showed that the Shanlan upland rice under dry land sprinkler irrigation had the highest stomatal conductance and transpiration rate, which delayed the senescence of functional leaves and contributed to significantly higher biomass accumulation than those under flood irrigation, moistening irrigation and traditional rainfed farming. Compared with the traditional rainfed farming, dry land sprinkler irrigation significantly increased the net photosynthetic rate of flag leaf of Shanlan upland rice, and also increased the number of effective panicles, the number of grains per panicle, seed setting rate and 1 000-grain weight, resulting in a significant increase in yield（203.10%）. In addition, dry land sprinkler irrigation saved water, which is the best cultivation method of shanlan upland rice.

Effects of Cultivation Patterns on Photosynthesis, and Yield and Its Components of Shanlan Upland Rice

Institute of Tropical Crops, Hainan University, Haikou, Hainan 570228, China

Received Date: 2019-04-02

Rev Recd Date: 2019-05-07

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Abstract: The net photosynthetic rate of flag leaf at heading, full heading and milky ripening stages, stem and leaf characteristics and yield of Shanlan upland rice were measured under the four cultivation methods: flooding irrigation, moistening irrigation, dry land sprinkler irrigation and traditional rainfed farming. The results showed that the Shanlan upland rice under dry land sprinkler irrigation had the highest stomatal conductance and transpiration rate, which delayed the senescence of functional leaves and contributed to significantly higher biomass accumulation than those under flood irrigation, moistening irrigation and traditional rainfed farming. Compared with the traditional rainfed farming, dry land sprinkler irrigation significantly increased the net photosynthetic rate of flag leaf of Shanlan upland rice, and also increased the number of effective panicles, the number of grains per panicle, seed setting rate and 1 000-grain weight, resulting in a significant increase in yield（203.10%）. In addition, dry land sprinkler irrigation saved water, which is the best cultivation method of shanlan upland rice.

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Effects of Cultivation Patterns on Photosynthesis, and Yield and Its Components of Shanlan Upland Rice

doi: 10.15886/j.cnki.rdswxb.2019.04.005

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