Nodulation control of crack fertilization technique reduced the growth inhibition of soybean caused by short-term waterlogging at early vegetative stage
Nodulation control of crack fertilization technique reduced the growth inhibition of soybean caused by short-term waterlogging at early vegetative stage
复制标题
裂缝施肥技术控瘤减轻了大豆生长期短期涝害的生长抑制
DOI：
10.1080/1343943x.2016.1164573
复制
发表时间：
2016
影响因子：
2.5
通讯作者：
Iijima M.
中科院分区：
文献类型：
--
作者：
Yamane K.;Iijima M.
由于日本大豆多在水田改旱地种植，涝渍是大豆生长和产量的制约因素。然而，有效的栽培技术，以减轻不利影响尚未开发。我们提出了一种新的大豆栽培技术，即裂缝施肥，它通过促进新根的生长和增加施肥量来提高产量。由于根生长和根瘤活性的抑制，抑制了养分吸收，渍水诱导氮缺乏。因此，可以推测裂缝施肥将有效缓解大豆生长和产量的抑制。将大豆栽培品种Sachiyutaka种植在1/5000个瓦格纳盆和根盒中。在不同生育期（V1和R4）对大豆植株进行两次单独的淹水处理，并在V3时进行裂缝施肥。在这些处理之后，分别在2012年和2013年的实验中在R5对大豆植物进行取样。结果表明，淹水胁迫对大豆的生长发育和产量以及根瘤的生长都有一定的抑制作用，大豆的光合作用、叶绿素含量和木质部汁液分泌速率等生理指标也明显下降。V3期裂缝施肥缓解了V1期涝渍的不利影响，而R4期裂缝施肥不能缓解涝渍的不利影响。因此，在营养生长初期涝渍后进行裂缝施肥是减轻其不利影响的栽培技术。
Waterlogging is the constraint for soybean growth and yield, because soybean is often cultivated in upland fields converted from paddy in Japan. However, efficient cultivation techniques for alleviating the adverse effects have not been developed. We have proposed the new soybean cultivation technique named crack fertilization which enables yield increase due to enhancing new root growth and N acquisition by increasing nodulation. Waterlogging induces N deficiency due to the suppression of nutrient uptake by the inhibition of root growth and nodule activity. Thus, it is hypothesized that crack fertilization would be effective to alleviate the inhibition of soybean growth and yield. The soybean cultivar of Sachiyutaka was planted in 1/5000 a Wagner pots and root boxes. Two separate waterlogging treatments were imposed to soybean plants at different growth stages, V1 and R4, and crack fertilization was done at V3. After these treatments, soybean plants were sampled at R5 in 2012 and 2013 experiments, respectively. Waterlogging at V1 and R4 inhibited the growth and yield of soybean and nodule growth, and the decreases in physiological parameters of soybean such as photosynthesis, chlorophyll content, and xylem sap exudation rate were observed. The adverse effects of waterlogging at V1 were alleviated by crack fertilization at V3, whereas crack fertilization could not alleviate the adverse effects of waterlogging at R4. Thus, crack fertilization after waterlogging at early vegetative stage would be the cultivation technique that enables to alleviate the adverse effects.