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首页> 外文期刊>Journal of food, agriculture & environment >Effects of tillage method, seed rate and microelement spraying time on grain yield and yield components of rapeseed (Brassica napus) in warm dryland condition
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Effects of tillage method, seed rate and microelement spraying time on grain yield and yield components of rapeseed (Brassica napus) in warm dryland condition

机译：温暖旱地条件下耕作方式，播种量和微量元素喷施对油菜籽粒产量及产量构成的影响

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摘要

An experiment was conducted to investigate the effects of different tillage systems (conventional and conservation tillage), seed rate and spraying time on the grain yield and yield components of rapeseed in dryland conditions, this experiment was performed at Agriculture Education Center in Gachsaran during 2007-2008 growing season by RCBD design and strip split plot with 3 replications. Main plots included tillage methods: 1) no-tillage, 2) chisel plow + disk harrow, 3) disk harrow + disk harrow, 4) conventional-till seed drilling, 5) mould board + disk harrow. Sub plots included seed rate with 3 levels, namely 5, 7 and 9 kg/ha, and finally microelements spraying time with 3 levels, namely no spraying, spraying before stem elongation and spraying after flowering. During the growing season yield and yield components of rape seed were recorded. Our results showed that conventional till seed drilling treatment had the highest positive effects on canola yield among treatments. In seed rate treatments, 5 kg/ha exhibited lower yield compared with 7 and 9 kg/ha. There was significant difference between two times spraying (spraying before stern elongation and after flowering) and no spraying on the canola yield. The highest yields were achieved by conventional till seed drilling with 7 kg/ha seed rate treatment (2957 kg/ha), conventional till seed drilling and spraying before stem elongation treatment (2936 kg/ha) and 7 kg/ha seed rate and spraying before stem elongation (3046 kg/ha), respectively. The least grain yield was recorded in no-tillage treatment with 5 kg/ha seed rate (1317 kg/ha), no-tillage without spraying (1234 kg/ha) and in 5 kg/ha seed rate without spraying (1168 kg/ha), respectively. Generally, planting with conventional-till seed drill device, 7 kg/ha seed rate and spraying before stem elongation were better than the other treatments.
机译：进行了一项试验来研究不同耕作制度（常规耕作和保护性耕作），播种量和喷洒时间对旱地条件下油菜籽的籽粒产量和产量构成的影响，该试验于2007年在Gachsaran的农业教育中心进行。由RCBD设计的2008年生长季节和3个重复的带状分割地块。主要地块包括耕作方法：1）免耕; 2）凿犁+圆盘耙; 3）圆盘耙+圆盘耙; 4）常规耕种播种机; 5）模板+圆盘耙。子样地包括3个水平的种子率，即5、7和9 kg / ha，最后是3个水平的微量元素喷雾时间，即不喷雾，茎伸长前喷雾和开花后喷雾。在生长季节，记录了油菜种子的产量和产量成分。我们的结果表明，常规耕种播种处理对双低油菜籽产量具有最高的积极影响。在播种量处理中，5 kg / ha的产量低于7 kg和9 kg / ha。两次喷施（在茎伸长前和开花后喷施）与不喷施双低油菜籽产量之间存在显着差异。通过常规的直至种子播种的7 kg / ha种子速率处理（2957 kg / ha），在茎伸长处理之前进行常规的直到种子播种和喷雾（2936 kg / ha）和7 kg / ha的种子速率和喷雾获得最高产量茎伸长前（3046 kg / ha）。在免耕处理下，籽粒产量最低，为5 kg / ha（1317 kg / ha），在不进行免耕处理的情况下不喷洒（1234 kg / ha），在5 kg / ha的播种量下不进行喷雾（1168 kg / ha） ha）。通常，使用常规耕种的种子播种机进行播种，播种量为7 kg / ha，在茎伸长前喷洒优于其他处理。

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