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在田间种植条件下,于汕优63的幼苗期、拔节始期、始穗期、齐穗期、分别相应喷施经盆栽筛选出的多效唑、B9、生根粉、赤霉素、硼砂、灌浆宝6种生理功能不同的植物生长调节剂,对汕优63高产群体纵向三层(叶层、茎层、根层)结构进行全程调控配置,结果表明,高产群体的根层报数、根长以及浮根数明显比对照(CK)增多、增长,根系伤流强度明显提高;茎层的茎秆基部1、2节间缩短增粗,其上端1,2节间比对照增长,使整株茎秆节间呈现下短上长、上疏下密的配置状态;从而使群体叶层的叶片空间纵向分布形成一种上流下密的良好受光姿态,改善了群体株间通风透光等气候生态条件,延缓了冠层叶片衰老进程,提高了群体的光照强度和净光合速率以及物质生产、运输能力,田间实产比CK提高19.14%,达极显著水平。
In the field planting conditions, Shanyou 63 in the seedling stage, jointing initiation stage, beginning of the heading stage, heading stage, respectively, sprayed by potting selected paclobutrazol, B9, rooting powder, gibberellin, borax, Three kinds of plant growth regulators with different physiological functions were used to control the structure of three vertical layers (leaf layer, stem layer and root layer) of high yielding population of Shanyou 63. The results showed that the number of root layer, root length, Root number significantly increased compared with the control (CK), growth, root traumatic injury strength was significantly increased; stem stalk base 1, 2 internode shortening and thickening, the upper end of 1,2 than the control growth, so that the whole plant stem In the internode, the short and long upper and the lower and upper densely arranged configuration state; so that leaves of the leaf layer of the vertical distribution of the space to form a high-density and good light-receiving attitude to improve the group of air and light and other climate and ecological conditions, Delayed the process of canopy leaf senescence, improved the light intensity and net photosynthetic rate, and the material production and transportation capacity of the canopy. The actual production in the field increased by 19.14% compared with CK, reaching an extremely significant level.