Controlling peanut vegetative growth and regulating development
隐藏域元素占位
Controlling peanut vegetative growth and regulating development
Application of regulators to control peanut vegetative growth and regulate development
Prohexadione calcium
According to a large number of experiments, spraying 150-200mg/L procyclonic acid calcium solution and 30-45kg per mu spraying solution at the end of full bloom can effectively reduce plant height, shorten internode length, increase the number of needles, and improve leaf photosynthesis Strength, root activity, single fruit weight and yield, significantly improve the activity of peanut superoxide dismutase, peroxide, catalase and other protective enzymes, improve peanut vitality, prevent premature aging, and improve peanut yield in many ways.
Mepiquat chloride
From the acupuncture stage to the early stage of pod formation, foliar spraying with 150 mg/L mepiquat chloride can improve the ability of roots to synthesize amino acids, promote the absorption of inorganic phosphorus by roots, and regulate the utilization and transformation of carbohydrates. , thereby improving root vitality and delaying root senescence. It is beneficial to the growth and pod formation of peanuts in the middle and late stages, which can increase the number of peanut pods, increase the number of full fruits, accelerate the development of pods, increase the weight and volume of single fruit, and increase the yield by 10% to 40% on average.
Paclobutrazol
The concentration of paclobutrazol and the amount of liquid medicine used in the full flowering period are determined by the growth of peanut plants. When the field fertility is high, the cultivation density is high, or the water and fertilizer are more, the plants grow vigorously, and the concentration of the applied agent should be higher. It can be larger, or even sprayed twice, in order to suppress leggy growth and achieve high yield; in the field with medium fertility and moderate cultivation density, or when the rain is normal, and the plant is growing in medium, the concentration of the application agent can be diluted, and the amount of liquid medicine can be general; in the field When the fertility is poor, the planting density is thin or the rain is insufficient, and the plant growth is poor, it is not suitable to apply paclobutrazol, otherwise the yield will be reduced. The concentration of paclobutrazol is 100～300mg/L.
Triazolone
Using 100～600mg/L triadimefon liquid to spray 25～30d after spring peanut begins to flower, the test results of spring peanut show that the number of green leaves at the harvest point is more, and more photosynthetic products are formed; 300～500mg/L triadimefon treatment The yield is about 10% higher than that of the control. It can be seen that triazolone has the advantages of preventing leggy lodging, preventing disease and senescence, having more green leaves, forming more photosynthetic products, and increasing yield.
Uniconazole
Spraying with 50-100mg/L uniconazole at the early flowering stage or with 60-120mg/L uniconazole at the full-flowering stage can reduce the plant height, promote thicker stems, thicker leaves and darker color, and promote the transport of photosynthetic products to the pods , seed kernels, increase yield, the yield increase rate can reach more than 10%.
Modulating phosphine
About 10 days after the peanut entered the peak flowering period of a single plant, the peanut plants were sprayed with 250-500 mg/L phosphine-adjusted liquid, and water was used as the control. 6d after spraying, the number of flowers decreased sharply, even reduced to 1/10 of the control, the flowers were obviously smaller, and there was no pollen in the anthers. The post-harvest seed test showed that the phosphine regulation could significantly reduce the empty fruit needles and young fruit of peanut, and increase the number of fruit, full fruit bunches and yield per plant, and the yield increase ranged from 6% to 17%.
Doxazole mepiquat chloride
In the period from the needle-making stage to the pod-setting stage of peanuts, use 100-150g of 10% Doxazole mepiquat chloride wettable powder per mu, add 30-45kg of water, and spray the foliage evenly once. It can be sprayed twice on the Wangchang plot with an interval of 15 to 20 days, which can not only effectively control the length of stems and leaves, but also significantly promote the expansion of pods, increase the rate of double nuts and full fruits by 12%, and increase the weight of 100 fruits by about 10g. The yield can be increased by 6% to 14%.
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