The late maturation of rice will affect the timely sowing of post-planted wheat. Ethephon is a plant growth regulator, which can be absorbed by the stems, leaves, flowers and fruits of plants and transferred into plant cells to decompose to ethylene and act as endogenous ethylene. According to relevant research, the spraying of ethephon at the initial stage of paddy filling has the effect of accelerating grouting and early maturing. After the application of rice, the ear sinking, lightening of leaves and yellowing of grain color are all earlier, and usually can promote rice early maturation. -3 days, and can reduce empty grains and increase grain weight. Spraying time is 3-10 days after rice is full. Spraying too early may affect normal flowering and fruiting of rice, resulting in reduced seed setting rate. Spraying too late will cause rice to produce a certain concentration of ethylene itself at late growth stage. . Jiangsu Bailing Agrochemicals Co., Ltd. (telephone)'s 40% ethephon agent was registered for rice ripening at a concentration of 500-666.7 mg/kg, ie, 1.25-1.67 g of formulation dilution spray per kilogram of water. At present, large-scale paddy rice in our province is near mature, and it is too late for some late harvested rice to be treated with ethephon. It is difficult to obtain significant results. Paraquat is a quick-acting, contact-killing herbicide that is rapidly absorbed by plant leaves, forms bipyridyl radicals in green tissues through photosynthesis and respiration, and hydrooxidation forms water and oxygen in leaf tissue. And peroxy radicals, such substances on the chloroplast membrane destruction is very strong, so that photosynthesis and chlorophyll synthesis is quickly suspended, the leaves began to victimize discoloration 2-3 hours after drug treatment. The drug has a strong destructive effect on the green tissues of monocotyledonous and dicotyledonous plants, but no conductive effect can only cause damage to the drug site and cannot penetrate the corked bark. The drug can be used for the drying of crops such as cotton and soybeans. Paraquat has strong oral toxicity to humans and animals. The death rate from acute poisoning is extremely high. There is no effective antidotal drug at present. When paraquat is used to expel the crop before rice is harvested, the drug will remain on the rice grain, which is not conducive to the safety of humans and animals. Therefore, do not use paraquat to expel the crop before rice is harvested. For late-maturing rice, spraying diquat in the vicinity of the harvest can speed up the dehydration of rice grain, facilitate harvesting, and allow early harvest and pluck. Syngenta's (telephone) Ligu 200g/L diquat fasting agent, registered for pre-harvesting stems and leaves and dry seeds for rice, the recommended dosage per hectare of pure drugs is 450-600 grams, equivalent to one acre Preparation 150-200 ml. The drug is non-selective contact herbicide, slightly conductive, can be quickly absorbed by plant green tissue and play a role in the destruction of plant cell membranes, drug parts yellow, can be used as seed plant desiccant, can also be used as potatoes, Rougheners for crops such as cotton, soybeans, flax, sunflower, corn, and sorghum. When dealing with mature crops, the residual green parts and weeds quickly dry out, facilitating early harvesting, less seed loss, and the harvested seeds are cleaner and drier, reducing cleaning and drying costs after harvesting. If it is desired that rice with a small area of ​​late maturity be harvested in the same period as other mature rice, the diquat treatment can be sprayed about 5 days before harvest. Tylosin Injection,Veterinary Injection,Inj Oxytetracycline,Ivermectin 1 Injectable NINGBO VOICE BIOCHEMIC CO. LTD , https://www.pharma-voice.com
Jingya, Batang Town, Binhai County, said on October 19th that rice has been fed with too much nitrogen, which is a bit greedy and green. Some rice grains are still in the milky phase. He asked if he could ripen with ethephon. A number of other readers have recently asked to ask whether it is possible to spray paraquat or drizzle on late mature rice.