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为确定冬小麦生产过程中氮肥的合理施用,实现氮肥资源高效利用。采用大田试验方法,研究了农民习惯(T1)、优化管理1(T2)、超高产种植(T3)、优化管理2(T4)四种不同栽培管理模式下冬小麦氮素吸收转运及对籽粒蛋白质产量及含量的影响。结果表明,两优化管理(T2与T4)与农民习惯(T1)和超高产(T3),不仅能够提高小麦生育前期对氮的吸收能力,而且可明显增加生育后期氮的积累量;T1、T3籽粒氮素累积主要依赖于花前地上部营养器官贮藏氮素的转运,两优化管理模式则由于协调提高了花前氮素转运和花后自身氮素积累,而获得较高的氮素收获指数。

第1个回答  2011-05-14
Wheat production process to determine the reasonable application of nitrogen fertilizer, nitrogen fertilizer to achieve efficient use of resources. A field test method to study the habits of farmers (T1), optimal management 1 (T2), super high-yielding planting (T3), optimal management 2 (T4) under four different culture and management model transformation and the winter wheat grain protein yield on and Content. The results show that the optimal management of the two (T2 and T4) and the farmers used to (T1) and ultra high (T3), not only can improve the early growth stage of wheat nitrogen absorption capacity, but also significantly increased the amount of nitrogen accumulation and late growth stages; T1, T3 grain nitrogen accumulation mainly depends on the flower shoot vegetative organs before the storage of nitrogen transport, the pattern of the two optimal management to improve the coordination of nitrogen transport and flowers after flowering before its nitrogen accumulation, and obtain a higher nitrogen harvest index .
第2个回答  2011-05-14
Winter wheat production process to determine the reasonable application of nitrogen efficiency of resource use, realize the nitrogen. Using field experiment method was used to study the farmers habits (T1), optimizing management 1 (T2), super-high-yeild planting (T3), optimizing management 2 (T4) four different cultivation management mode of winter wheat n uptake transshipment and grain protein yield of the content and influence. The results show that these two optimizing management (T2 and T4) and peasants habit (T1) and super-high-yeild (T3), can not only improve wheat early growth absorbing ability of nitrogen, and can obviously increase of nitrogen accumulation quantity growth anaphase; T1, T3 grain nitrogen accumulation of dancers depends on the flower of upper vegetative organs storage nitrogen transhipment, two optimizing management mode, the coordination raised before flower nitrogen transshipment and flowers, and accumulated nitrogen after itself get higher n harvest index
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