Promote peanut yield increase and prevent premature aging
隐藏域元素占位
Promote peanut yield increase and prevent premature aging
Application of regulators to promote peanut yield increase and prevent premature aging
Diethyl aminoethyl hexanoate
Spraying the whole plant with 40mg/L diethyl aminoethyl hexanoate liquid once in full bloom of peanut can promote the assimilation of carbon dioxide and improve the photosynthetic efficiency of peanut leaves. Under drought stress, it can protect the integrity of cell membrane and reduce leaf water loss. rate, increase the water retention capacity of leaves, slow down the damage of drought to leaves, and prevent premature leaf senescence in the later stage.
DCPTA spraying 30-40 mg/L DCPTA liquid evenly on the whole plant at the first flowering stage, the lower needle stage and the pod setting stage can increase the number of pods, and has the effect of fruit expansion and yield increase.
Brassinolide
Using 0.05-0.2 mg/L brassinolide solution, sprayed once in each of peanut seedling stage, flowering stage and lower needle stage, and sprayed brassin at seedling stage, which increased the content of chlorophyll and proline, and enhanced the effect of chlorophyll and proline. The oxidase activity and root activity promoted the growth and development of peanut, and the main stem height, the length of the first pair of lateral branches, the number of branches, the number of fruit needles and the dry weight of the plant were all higher than those of the control. Spraying Brassinolide at the flowering and lower needle stages can significantly increase the nitrate reductase activity and the content of leaf protein and soluble sugar in peanut plants, and enhance the root vigor of the main root. After spraying for 28 days, the fresh weight and dry weight of unit leaf area and the fresh weight and dry weight of plants all increased. When ripe and harvested, the number of pods per plant, the rate of full fruit and the yield were higher than those of the control, which finally increased the yield of peanut pods.
Triacontanol
Spraying 0.5-1mg/L triacontanol at the peanut seedling stage, before and after flowering, can improve the chlorophyll content and photosynthesis efficiency, promote the utilization rate of light energy, speed up the accumulation of fat and protein, and make the peanut ripen 5-7 days earlier, and It can improve the rate of full fruit, the rate of double kernels and the weight of 100 kernels, and the yield is increased by 5% to 10%.
Yield
In the early flowering stage and the lowering stage, spray 1 or 2 times with 10-40 mg/L Yield-increasing Spirit liquid, which can increase the number of branches and fruit, and promote the increase of yield.
Clorpyrifos
From the next needle stage to the pod setting stage, foliar spraying with 1-5mg/L liquid medicine can improve the full fruit rate and increase the yield.
Sodium Nitrophenolate
With 6-12mg/L sodium nitrophenolate solution sprayed once on the 4th, 8th and 12th leaf stage of peanut main stem respectively, the leaf color is dark green, the leaf spot disease is reduced, the number of results is increased, the pods and seed kernels are heavier, especially The number of full fruits increases, the rate of full fruits is increased, and the effect of increasing yield is remarkable.
Gibberellic acid GA3
The low-node flowers that bloom early are mostly effective flowers, and the high-node flowers that bloom late are mostly ineffective flowers. Because even if the flowers with high node position form fruit needles, due to the high node position, the fruit needles cannot penetrate into the soil, resulting in empty needles. According to research, fruit needle elongation is greatly affected by gibberellic acid. On the 20th and 27th day after the first flowering of spring peanuts, 30-40mg/L gibberellic acid solution was sprayed on the middle and lower parts of the plant. The number of pods on the fifth branch and main stem was significantly higher than that of the control, and the rate of full fruit was high. Gibberellic acid promoted high node position. Pod development, increase the number of full fruit at high nodes. Summer peanuts should be sprayed 20 days after the beginning of flowering, but the yield increase effect is not as significant as that of spring peanuts.
Ethephon
Peanuts have more flowers, less pods, more succulents, and less full fruits, so try to control the later flowers, so that they have less or no flowering, so as to reduce nutrient consumption and create conditions for more pods and full pods. When there are 5-6 leaves in the early flowering stage, foliar spray with 100-300mg/L ethephon solution or 2000mg/L ethephon solution 25 days after peanut flowering can control the number of flowers and make the plants tall, tough, and The leaves are small and dark in color, which promotes single fruit weight and increases yield. If the medication is too late, after the full bloom period, the effect of controlling flowering will be small, but there will be a phenomenon of "falling green".
Polyamine
In the middle and late stage of peanut growth, spraying 145mg/L spermidine or 1740mg/LL-arginine on the leaves can increase the content of chlorophyll and protein, delay the decline of chlorophyll and protein content in the process of leaf senescence, and improve the removal of peroxides. activity, reducing the content of malondialdehyde, a product of membrane lipid peroxidation.
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