[ Objective] The research aimed to study influences of meteorological factors on high-quality summer millet production in north Henan Province. [ Method] By using summer millet yield and corresponding meteorological d...[ Objective] The research aimed to study influences of meteorological factors on high-quality summer millet production in north Henan Province. [ Method] By using summer millet yield and corresponding meteorological data in Anyang of Henan, influence of rainfall on yield of new high-quality summer millet vadety during 2003 -2012 was analyzed. [Result]Rainfall during May -July had the maximum influence on summer millet yield. Correlation regression equation was Y = 0.738 8X ＋ 159.991 （ R = 0.982 04）, reaching extremely significant level. [ Conclusion ] The re- search could provide scientific basis for sufficiently using local meteorological condition, breeding high-quality summer millet variety and its high yield.展开更多
In this study,effects of nitrogen（ N） amount applied on photosynthesis behaviors of the summer millet in North China was investigated. Photosynthetic rates（ Pn）,chlorophyll contents（ Chl）,photosynthetic active d...In this study,effects of nitrogen（ N） amount applied on photosynthesis behaviors of the summer millet in North China was investigated. Photosynthetic rates（ Pn）,chlorophyll contents（ Chl）,photosynthetic active duration（ PAD）,and chlorophyll relative steady phase（ RSP） in flag and the upper third leaves were assessed in cultivars of Baogu 19,Jigu 19,9050,and 60 D under three N treatments [i. e.,0（ control）,75,and 150 kg/hm2]. Results indicated that the photosynthesis parameters were drastically regulated by external N levels,all of them showing elevation along with the increased N input in both assayed leaves.Among the cultivars examined,behaviors of the photosynthetic parameters were much better in Baogu 19 and worse in 60 D. The plant yields in the cultivars under various N treatments were shown to be in consistent with the behavior of the photosynthesis parameters. Correlation analysis revealed that plant yield is positively correlated with Pn and Chl and significantly positively correlated with PAD and RSP,suggesting that longer effective photosynthetic duration of leaves impacts largely on plant biomass production and the yield formation potential. Our investigation indicates that suitable external N applied can increase the yield of summer millet associating with the improvement of photosynthesis behaviors in upper leaves that contribute to plant biomass at the late growth stage. Baogu 19 exhibited higher plant yield together with improved photosynthetic parameters in upper leaves,suggesting its potential as an elite cultivar in planting in the summer season of North China.展开更多
【目的】筛选对复播谷子田杂草具有较好防效的除草剂,为安全、高效应用除草剂提供科学依据。【方法】采用随机区组的方法,定点取样调查各处理小区的杂草株数、鲜重,评价各供试药剂对杂草的防除效果。【结果】10%单嘧磺隆可湿性粉剂210 g...【目的】筛选对复播谷子田杂草具有较好防效的除草剂,为安全、高效应用除草剂提供科学依据。【方法】采用随机区组的方法,定点取样调查各处理小区的杂草株数、鲜重,评价各供试药剂对杂草的防除效果。【结果】10%单嘧磺隆可湿性粉剂210 g a.i./hm^2处理和45%扑津·西草净可湿性粉剂1 181.25 g a.i./hm^2处理,对复播谷子田单子叶杂草和双子叶杂草的防效均在86%以上,鲜重防效均在96%以上;48%麦草畏水剂360 mL a.i./hm^2处理,对复播谷子田双子叶杂草的防效为85.61%,鲜重防效为99.88%。【结论】选用10%单嘧磺隆可湿性粉剂、45%扑津·西草净可湿性粉剂和48%麦草畏水剂,采用二次稀释的方法进行田间喷雾,可有效防除南疆区域复播谷子田杂草。展开更多
基金Supported by"11th Five-year National Science and Technology Support Plan Project,China(2006BAD02B02-01-02)Technology System Project of National Modern Millet Industry,China(CRS-07)
文摘[ Objective] The research aimed to study influences of meteorological factors on high-quality summer millet production in north Henan Province. [ Method] By using summer millet yield and corresponding meteorological data in Anyang of Henan, influence of rainfall on yield of new high-quality summer millet vadety during 2003 -2012 was analyzed. [Result]Rainfall during May -July had the maximum influence on summer millet yield. Correlation regression equation was Y = 0.738 8X ＋ 159.991 （ R = 0.982 04）, reaching extremely significant level. [ Conclusion ] The re- search could provide scientific basis for sufficiently using local meteorological condition, breeding high-quality summer millet variety and its high yield.
基金Supported by Special Fund for Agricultural Science and Technology Achievement Transformation in Hebei Province(17826335D)National Millet and Sorghum Industry Technology System"Baoding Comprehensive Experimental Station"(CARS-06-13.5-B2)
文摘In this study,effects of nitrogen（ N） amount applied on photosynthesis behaviors of the summer millet in North China was investigated. Photosynthetic rates（ Pn）,chlorophyll contents（ Chl）,photosynthetic active duration（ PAD）,and chlorophyll relative steady phase（ RSP） in flag and the upper third leaves were assessed in cultivars of Baogu 19,Jigu 19,9050,and 60 D under three N treatments [i. e.,0（ control）,75,and 150 kg/hm2]. Results indicated that the photosynthesis parameters were drastically regulated by external N levels,all of them showing elevation along with the increased N input in both assayed leaves.Among the cultivars examined,behaviors of the photosynthetic parameters were much better in Baogu 19 and worse in 60 D. The plant yields in the cultivars under various N treatments were shown to be in consistent with the behavior of the photosynthesis parameters. Correlation analysis revealed that plant yield is positively correlated with Pn and Chl and significantly positively correlated with PAD and RSP,suggesting that longer effective photosynthetic duration of leaves impacts largely on plant biomass production and the yield formation potential. Our investigation indicates that suitable external N applied can increase the yield of summer millet associating with the improvement of photosynthesis behaviors in upper leaves that contribute to plant biomass at the late growth stage. Baogu 19 exhibited higher plant yield together with improved photosynthetic parameters in upper leaves,suggesting its potential as an elite cultivar in planting in the summer season of North China.
文摘【目的】筛选对复播谷子田杂草具有较好防效的除草剂,为安全、高效应用除草剂提供科学依据。【方法】采用随机区组的方法,定点取样调查各处理小区的杂草株数、鲜重,评价各供试药剂对杂草的防除效果。【结果】10%单嘧磺隆可湿性粉剂210 g a.i./hm^2处理和45%扑津·西草净可湿性粉剂1 181.25 g a.i./hm^2处理,对复播谷子田单子叶杂草和双子叶杂草的防效均在86%以上,鲜重防效均在96%以上;48%麦草畏水剂360 mL a.i./hm^2处理,对复播谷子田双子叶杂草的防效为85.61%,鲜重防效为99.88%。【结论】选用10%单嘧磺隆可湿性粉剂、45%扑津·西草净可湿性粉剂和48%麦草畏水剂,采用二次稀释的方法进行田间喷雾,可有效防除南疆区域复播谷子田杂草。
