不同时期喷施SHK-6对大豆光合生理及产量、品质形成效应的研究

STUDY ON PLANT GROWTH REGULATOR SHK-6 ON SOYBEAN YIELD AND PROTEIN QUALITY AND ITS PHOTOSYNTHESIS IN DIFFERENT GROWTH DURATION

以垦农5号为试验材料，在大田条件下，研究在大豆不同生育时期，叶面喷施新型植物生长调节剂SHK-6对大豆产量和品质形成及其光合生理的调控。经两年试验，结果表明：SHK-6可以，1提高单株结荚数、粒数和粒重，实现产量显著提高，产量增加了8．1％～9．3％；2降低株高，提高了植株的生物量；3显著改善了叶片光合生理功能，如提高了叶片光合速率、叶绿素含量和PSⅡ光化学效率，明显改善了RuBPCase、PEP羧化酶和蔗糖磷酸合成酶的活性；4SHK-6在大豆上使用的最佳时期为R1期。

Field experiments were conducted in 2003 to 2004 at the Research Center of China Agricultural University to examine the effect of PGR SHK-6 （80% Diethyl aminoethyl hexanoate and Mepiquat chloride, its ratio is 1 ： 5 on yield and quality of Soybean （Glycine max L. ）, cv. Kennong 5. SHK-6 was foliar applied in V3, R1, R3 and R5 stage at 100 mg · L^-1, with water as control. The results showed： 1） SHK-6 treatment increased the number of pods and seeds per plant and the weight of seeds per plant, and significantly increased 8.1% to 9.3% seed yield than control; 2 SHK-6 treatments decreased the heights, and promoted the accumulation of biomass; 3 SHK-6 significantly increased the leaf physiology, such as photosynthetic rate, chlorophyll content, the photochemistry efficiency were increased by SHK-6, and the activities of RuBPcase, PEPCase and SPS were improved; 4 The R1 stage was the optimal time to spraying SHK-6 on soybean.