Dwarfing Sorghum Plants and Reducing Lodging
隐藏域元素占位
Dwarfing Sorghum Plants and Reducing Lodging
Plant growth regulators that dwarf sorghum plants and reduce lodging
Chlorhexidine
Spraying chameleon at the jointing stage can effectively control the plant height of sorghum, achieve densification and increase yield, and improve grain quality.At the jointing stage, 5000 mg/L, 2000 mg/L, 1250 mg/L, 909 mg/L, 714 mg/L chlorophyll were sprayed respectively. The results showed that the dwarfing effect on sorghum plants at the heading stage was better than that of the water control. Increased by 5.43%, 13.18%, 3.10%, 3.88%, 8.53%;The dwarfing effect on sorghum plants at maturity was increased by 9.94%, 29.19%, 13.64%, 18.01%, and 14.91%, respectively, compared with the clear water control. Among them, the treatment with the concentration of 2000 mg/L was the best.
Ethephon
Spraying ethephon at the jointing stage can effectively control sorghum plant height, achieve densification, increase yield, and improve grain quality. Spraying 4000 mg/L, 2000 mg/L, 1000 mg/L, 500 mg/L and 400 mg/L ethephon at the jointing stage respectively showed that the dwarfing effect on sorghum plants at the heading stage was higher than that of the water control. 29.32%, 34.58%, 21.80%, 21.8%%, 2.18%, the dwarfing effect on sorghum plants at the mature stage was 21.07%, 22.16%, 19.77%, 18.63%, and 12.11% higher than that of the clear water control, respectively. Among them, the treatment with the concentration of 2000 mg/L was the best.
On sorghum, the dwarfing effect of spraying ethephon is more significant than that of chlorophyll, which can reduce the height of the center of gravity, improve the bending resistance of the stem, and enhance the mechanical strength of the stem, thereby enhancing the bending resistance and lodging resistance of the plant.However, there was little difference in improving sorghum photosynthetic index, chlorophyll content, and grain quality.
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