首页> 外文期刊>Pesquisa Agropecuária Tropical >Sistemas de cultivo e nitrogênio em cobertura na produtividade e atributos tecnológicos de feijoeiro sob plantio direto
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Sistemas de cultivo e nitrogênio em cobertura na produtividade e atributos tecnológicos de feijoeiro sob plantio direto

机译:免耕普通大豆的种植制度和氮素覆盖及产量和技术特性。

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Common bean has been the main crop in succession to corn and Brachiaria in no-tillage systems, in the Brazilian Savannah. This study aimed to evaluate the influence of crop systems and topdressing nitrogen on grain yield and technological attributes of common bean under no-tillage. A randomized block design, in a split-plot arrangement, with four replications, was used. The plots consisted of three crop systems (corn in sole crop, corn + Urochloa ruziziensis intercropped and U. ruziziensis in sole crop) and the subplots by five nitrogen rates (0 kg ha -1 , 40 kg ha -1 , 80 kg ha -1 , 120 kg ha -1 and 160 kg ha -1 ). There is interaction between predecessor cropping systems and N rates for grain yield, milling efficiency specifically on sieve 13, as well as for the grain hydration ratio. Increasing topdressing N rates applied on common bean in succession to corn in sole crop promote increases in grain yield, resulting in a milling efficiency in the oblong-hole sieve 14 higher than in the other crop systems evaluated. The increase of the topdressing N rates applied on common bean in succession to corn and U. ruziziensis in sole crops or intercropped does not influence the time for maximum hydration of the grains, but reduces their cooking time, mainly in succession to U. ruziziensis and corn in sole crops.
机译:在巴西的萨凡纳,在免耕系统中,普通豆已成为继玉米和Brachiaria之后的主要农作物。本研究旨在评估免耕条件下作物系统和追施氮肥对普通豆籽粒产量和技术特性的影响。使用具有四重复的以分裂图布置的随机区组设计。该地块由三种作物系统(单一作物的玉米,间作的玉米+陆地棉Urochloa ruziziensis和单一作物的U. ruziziensis)和以五个氮素比率(0 kg ha -1,40 kg ha -1,80 kg ha- 1、120 kg ha -1和160 kg ha -1)。前茬种植系统和N速率之间存在相互作用,以提高谷物产量,专门在13号筛子上的碾磨效率以及谷物的水合率。在单一作物上,连续施用到普通豆上的玉米追施氮肥的比例提高了玉米的单产,从而导致长孔筛14的碾磨效率高于其他评估的农作物系统。单一农作物或间作作物上连续施用玉米和豆类的普通豆追施氮肥的施肥量不影响谷物最大水化的时间,但减少了其蒸煮时间,主要是继承了豆类和U. ruziziensis。唯一农作物中的玉米。

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