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首页> 外文期刊>日本作物學會紀事 >Effect of the Combination of Non-tillage and Tillage on Wheat Yield and Physical Properties of Soil in Rice-wheat Cropping
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Effect of the Combination of Non-tillage and Tillage on Wheat Yield and Physical Properties of Soil in Rice-wheat Cropping

机译：非耕作和耕作组合对稻米种植土壤麦产量和物理性质的影响

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In this experiment, four plots which were combined non-tillage and tillage in autumm and spring were prepared as follows; non-tillage in autumn and spring (Nt-Nt), non-tillage in autumn and tillage in spring (Nt-T), tillage in autumn and non-tillage in spring (T-Nt), and tillage in autumn and spring (T-T). The experiments were continuously conducted from wheat in 1964 to rice in 1968. Soil of this paddy field was fluvio-marine soil (CL), and wheat variety used was Shirasagikomugi. The wheat yield of non-tillage plot (Nt-Nt) was fairly decreased in first year, and was recovered in and after second year. In plots (Nt-T and T-Nt), where non-tillage and tillage were combined, more yields were produced than those in plots(Nt-Nt and T-T) where non-tillage or tillage was continued. The amounts of wheat growth were smaller atearly growth stage and were larger at late stage in the plots of non-tillage in autumn (Nt-T and Nt-Nt)than those in plots of tillage in autumn (T-Nt and T-T). The macro pore ratio (air ratio at pF-1.5) at plow layer in non-tillage plot (Nt-Nt) was considerably decreased in first year, and was hardly changed in subsequent years. It was presumed that the decreasing of macro pore ratio in first year was due to the condition of field puddled at transplanting culture of rice before initiation of non-tillage continuation. The macro pore ratios at lower part of plow layer and at subsoil layer were higher in plots combined non-tillage and tillage (Nt-T and T-Nt) than in plots continued non-tillage or tillage (Nt-Nt and T-T). And those macro pore ratios were closely correlated with yield. It was considered from results obtained that wheat cultivation, in which non-tillage and tillage were combined in rice-wheat cropping, contributed to formation of the suitable soil conditions for root development and resulted to increase yield. It was also assumed that the continuation of non-tillage for several years did not decrease yield.
机译：在该实验中，如下制备四个含有非耕作和耕作的腭和耕作;秋天和春天（NT-NT）的非耕作，秋季和耕作中的春天（NT-T），在秋季（T-NT）的秋季和非耕作中的耕作，以及秋季和春天的耕作（ TT）。 1964年，1964年将实验从小麦从小麦进行，1968年。该稻田的土壤是氟维奥 - 海洋土壤（Cl），使用小麦品种是Shirasagikomugi。在第一年的非耕作情节（NT-NT）的小麦产量相当下降，并在第二年内和后恢复。在绘图（NT-T和T-NT）中，其中组合了非耕作和耕作，产生更多的产率（NT-NT和T-T），其中继续进行非耕作或耕作。小麦生长的量较小，较小的生长阶段较小，在秋季（NT-T和NT-NT）的非耕作曲线中的晚期比秋季耕作（T-NT和T-T）较大。在非耕作图中犁层（NT-NT）在非耕作图中的宏观孔比（PF-1.5的空气比）在第一年显着降低，随后几年难以改变。据推测，第一年宏观孔隙率的降低是由于在非耕作延续开始之前在稻米移植培养物中被挤压的情况。犁犁层下部和底层层的宏观孔比在曲线上较高，非耕作和耕作（NT-T和T-NT）比在曲线上继续不耕作或耕作（NT-NT和T-T）。那些宏观孔比与产率密切相关。从获得的结果中考虑了小麦培养的结果，其中非耕作和耕作组合在大米 - 小麦种植中，有助于形成根部发育的合适土壤条件，并导致产量增加。还假设延续的非耕作数几年没有减少收益率。

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