Prevent wheat from growing too tall
隐藏域元素占位
Prevent wheat from growing too tall
Application of growth regulators to prevent excessive wheat growth
Prohexadione calcium
5% prohexadione calcium effervescent granules were applied about 7d before jointing. The results showed that applying 5-7 g of prohexadione calcium per mu could significantly reduce wheat plant height, increase plant base internode diameter, and improve photosynthetic rate, 1000-grain quality and yield. Among them, "Wanmai 68" applied 7g/mu, which could increase the yield by 9.89%; "Zhengmai 9023" applied 5g/mu, which could increase the yield by 11.29%.
Chlorhexidine
Seed soaking with 500-2000mg/L chlorophyll solution for 4 hours can improve the germination rate of wheat seeds, reduce the height of wheat plant and the center of gravity, shorten the length of the second internode at the base, increase the thickness, enhance the mechanical strength of the stem, and reduce the lodging. coefficient decreases. Among them, low-concentration seed soaking treatment can significantly increase the amount of wheat roots and promote strong seedlings; seed soaking treatment with 2000mg/L chameleon solution combined with foliar spraying of 500mg/L champhetamine solution at jointing stage can improve the lodging resistance of wheat stems best effect.
Mepiquat chloride
300mg/L of mepiquat chloride sprayed in the late stage of wheat rising, compared with the control group, the plant height was significantly reduced by about 2.8 cm, the flexural resistance of the stem base of the plant was also greater than that of the control group, and the effect on the dry mass of the base internodes was greater than that of the control group. Compared with the control group, the dry mass of the first section increased by 36.5%, and the dry mass of the second section increased by 34.9% compared with the control group. It has a good effect on reducing plant height, increasing stem strength, preventing wheat growth, preventing lodging, improving seed setting rate, increasing thousand-grain weight and yield.
Paclobutrazol
Soaking seeds with 100mg/L paclobutrazol solution for 24 hours or spraying the whole plant with 200-400mg/L solution at 1 leaf and 1 heart stage can control plant height, increase chlorophyll content, promote greening, and enhance plasma membrane stability. Enhance the resistance of seedlings; before the wheat gets up to jointing, the whole plant is sprayed with 5-6g of active ingredients per acre, which can control the plant height, reduce the plant height by 3.7cm, and increase the stem diameter by 14.6%. The quality of 1000-grain and 1000-grain increased. Spraying paclobutrazol can make wheat plants dwarf, enhance lodging resistance, and increase wheat yield.
Uniconazole
Uniconazole inhibited the growth of aerial parts. The root length of wheat seedlings treated with 20mg/L uniconazole was 11.17cm long. increased by 106.0%, 100.0% and 80.4%, and the chlorophyll content increased by 18.7%, 11.1% and 6.3% respectively compared with the control. After 20mg/L and 40mg/L uniconazole treatment, the germination vigor and germination rate of wheat seeds increased by 55.5% and 22.2%, 50% and 39.9%, respectively, compared with the control, while the germination vigor and germination rate of 60 mg/L uniconazole were increased. The germination rate was lower than the control. Seed soaking with uniconazole can promote wheat seedlings and enhance plant resistance, which is beneficial to wheat production, but attention should be paid to controlling the concentration.
Growth Stage Products
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