| 冬小麦土壤深松保墒增产效应试验研究 |
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| 引用本文： | 霍治国,白月明,李光华,温民,陈林.冬小麦土壤深松保墒增产效应试验研究[J].应用气象学报,2000(Z1). |
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| 作者姓名： | 霍治国 白月明 李光华 温民 陈林 |
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| 作者单位： | 中国气象科学研究院!北京100081 |
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| 基金项目： | “九五”国家科技攻关项目!“农业气象灾害防御技术研究”96-0 2 0 -0 1 -0 1专题资助 |
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| 摘 要： | 采用土壤深松 45cm、30 cm处理打破犁底层 ,1 996～ 1 998年连续进行 2个年度的冬小麦保墒、增产效应田间试验 .试验结果表明 :土壤深松处理后可减少冬小麦全生育期 0～ 1 0 0 cm的作物耗水量 ,促进根系对 1 0 0～ 2 0 0 cm土层土壤水分的利用 ,提高冬小麦的产量耗水比 .土壤深松处理能明显增加 0～ 30 cm土层的土壤湿度和含水量 ,降低 0～ 50 cm土层的土壤容重 .有利于冬小麦根系、茎、叶的生长发育和总生物量的累积 .土壤深松 45cm处理 2年平均冬小麦增产 7.0 % ,土壤深松 30 cm处理第一年增产 7.7% .冬小麦土壤深松保墒增产效应的适宜深松深度为 30 cm.
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| 关 键 词： | 冬小麦 土壤深松 保墒增产效应 小气候作用机制 |
EFFECT OF DEEP TILLAGE ON WATER CONSERVATION AND YIELD INCREASE OF WINTER WHEAT |
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| Huo Zhiguo,Bai Yueming,Li Guanghua,Wen Ming,Chen Lin.EFFECT OF DEEP TILLAGE ON WATER CONSERVATION AND YIELD INCREASE OF WINTER WHEAT[J].Quarterly Journal of Applied Meteorology,2000(Z1). |
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| Authors: | Huo Zhiguo Bai Yueming Li Guanghua Wen Ming Chen Lin |
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| Abstract: | A field experiment on the effect of 0-30cm and 0-45cm deep tillage on water conservation and yield increase of winter wheat was conducted from 1996 to 1998. The results indicate that deep tillage can reduce the water consumption of winter wheat in the 0-100cm soil layer and improve the efficient use of water in the 100-200cm soil layer by root system, thus increase the ratio of yield to water consumption. Deep tillage significantly increased the soil moisture in the 0-30cm layer, decreased the soil bulk density of the 0-50cm layer, and was in favor of the growth of the root, stem, leaf and biomass accumulation. Through 0-45cm and 0-30cm deep tillage treatments, the two year averaged yield and the first year yield of winter wheat increased by 7.0% and 7.7% respectively when compared with the control treatment. The favorable depth of deep tillage for water conservation and yield increase is 30cm. |
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| Keywords: | Winter wheat Deep tillage Water conservation and yield increase Influencing mechanism of microclimate |
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