Improve Rice Seed Setting Rate And Increase Yield
隐藏域元素占位
Improve Rice Seed Setting Rate And Increase Yield
Application of regulators to improve rice grain setting rate and increase yield
6-benzylamino-purine 6BA
At the early ear stage of rice, foliar spraying with 40mg/L 6-BA liquid can lead to full heading and grain filling 3 days earlier than water spraying, increase the number of effective panicles and grains per panicle, and increase the seed setting rate by 3.7% and 4.5%. The thousand-grain weight is increased by 0.7g, and the influence of autumn wind and rain on rice flowering and pollination can be reduced, and the yield increase effect is remarkable.
Gibberellic acid GA3
From the beginning of the ear to the full ear, a 25-37.5 mg/L gibberellic acid solution can be used for foliar spraying, which can improve the plant height of tillering ears, promote the uniformity of rice ears, increase the later stage of splitting into ears, and improve the seed setting rate. , to reduce shedding loss of the spikelet part at the harvesting point.In the case of normal growth of early rice and continuous cropping late rice, it is appropriate to spray when the heading is 60% to 70% to solve the problem of "warped rice head". It should be sprayed when the temperature rises after the first cold dew wind. (Note: Strictly control the use period and dosage. Too early and excessive amounts will easily cause the rice plants to be too high and lodging.)
Yield(P-iodophenoxyacetic Acid)
At the heading stage of rice, spraying with 20-40 mg/L Yield-Increasing Spirit liquid can promote the transportation of plant nutrients, and make the nitrogen, phosphorus and other nutrients in the rice to be reasonably distributed, so that the nutrients can move to the rice ears, thereby achieve the effect of increasing production.According to the Shaoxing Donghu farm experiment, the yield of early rice can be increased by 9.3% after spraying 50 kg of 25 mg/L Yield-Increasing Spirit Liquid per mu.
Triacontanol
Foliar spraying of 1-2 mg/L triacontanol once in the 2-3 stage of rice ear differentiation and booting stage can promote the growth and development of rice plants, improve carbon and nitrogen metabolism levels, and increase the number of effective panicles and grains. , the number of grains per spike, increase the seed setting rate, thousand-grain weight and drying rate.Compared with the control, the treatment increased the average yield of dry grains by 0.964t/hm2, the increase rate was 15.4%, and the quality was improved. According to the data of acceptance, seed testing and production testing at multiple points for many years, the yield increase effect is stable and the reproducibility is good. The advantages of simple and convenient use, etc., are of great significance to increasing grain output and pollution-free agriculture.
Sodium Nitrophenolate
Using sodium nitrophenolate before transplanting rice seedlings and during the field stage can quickly restore rice growth ability, improve heading uniformity and seed setting rate.According to the experiments in Lin'an, Tonglu, Zhejiang and other places, the concentration of 3-4 mg/L of the liquid was sprayed once 4 to 5 days before the transplanting of the seedlings in the hybrid seed production field, at the booting stage and at the full heading stage, and sprayed per mu each time. 50 kg liquid medicine can increase the seed setting rate by 1.9%~2.7% and increase the yield by 12%~22%. It can also be mixed with 3 mg/L sodium nitrophenolate and gibberellic acid, which has a synergistic effect.
Growth hormones
According to Zheng Leya et al.'s experiment on the hybrid medium indica rice variety "Xinliangyou 6", 20 mg/L indole acetic acid or 50 mg/L naphthalene acetic acid (sodium) was used as foliar spray twice at the booting stage and heading stage of rice.It can improve the net photosynthetic rate of rice flag leaves, increase the number of grains per panicle, seed setting rate and thousand-grain weight of rice plants to different degrees, effectively delay later senescence, and obtain high yield. Among them, the effect of tea acetic acid is better than that of indole acetic acid.
Brassinolide
The use of aqueous solution of brassinolide at the stage of rice separation, the end of rice separation, the breaking heading stage, and the flowering and grain filling stage can promote the growth and development of rice. The number of grains and 1000-grain weight of rice are significantly increased, and the yield of rice is increased. More obvious, its growth rate can reach 20% to 30%, which has the prospect of promotion and application.Brassinolide aqueous solution is used in paddy field, the effective concentration is 0.025~0.1 mg/L, and the dosage per mu is 50 kg. It is recommended to spray fine mist (pore size 1.0 mm) in small holes to enhance the adhesive force of the liquid medicine and give full play to its effect. Brassinolide aqueous solution is used in paddy field, which is safe and free of phytotoxicity to rice within the specified concentration range, and no adverse phenomenon has been found.
Thidiazuron
In the rice seedling stage and flowering stage, spraying 3 mg/L thidiazuron on each foliar surface can improve the quality of rice agronomic traits, increase the number of grains per ear and seed setting rate, and reduce the number of rice seedlings. Increase production by 15.9%.
Diethyl aminoethyl hexanoate
With 10,67~16 mg/L diethyl aminoethyl hexanoate sprayed twice at the seedling stage, with an interval of 7 d, the rice yield can be increased by more than 6.15%, and it is safe to the environment.
Growth Stage Products
Get A Quote
Email:info@pandustry.com
WhatsApp：+86-15729389816
Tel.:+86-371-60383117
Add: 3F, Building No.9, National University Technology Zone(East), Zhengzhou , Henan, China
Leave a Message
Demand for agrochemical products or crops