When will the corn boom control medicine be played?
People who have planted corn all know that after corn has grown for a period of time, it is necessary to control the boom in time, otherwise the yield will be reduced, when will the corn boom control medicine be hit?
When will the corn boom control medicine be played?
Corn growth control drugs are generally best at jointing stage or 6-10 leaf stage, no later than 12 leaves at the latest, if more than 12 leaves, it may cause a reduction in yield. When spraying, spray on the upper leaves of the plant as far as possible, and spray twice in the whole growth period.
What kind of medicine should be used to control the prosperity of corn?
1. Dwarf Zhuang Su
Dwarf is an antagonist of gibberellin, and its mechanism is to inhibit the biosynthesis of gibberellin in plants. Its physiological function is to control the overgrowth of plants, promote reproductive growth, shorten plant internodes, develop roots and resist lodging.
2. Triazole
Such as paclobutrazol, uniconazole and so on. The mechanism of these regulators is to inhibit the biosynthesis of endogenous gibberellin, increase the activity of indole acetic acid oxidase and reduce the level of endogenous auxin. It can obviously weaken the top growth advantage of the plant, promote the growth of lateral buds and dwarf the plant.
3. Bijiu
Bijiu can inhibit the biosynthesis of endogenous gibberellin and hormone, and its main function is to inhibit the growth of new branches, shorten the length of internodes, increase the thickness of leaves and stimulate root growth.
4. Methylpiperidine
Also known as thalidomide, strong cotton element. Meperidine can inhibit the growth of plant tip, shorten the length of internodes and make the plant type compact, which is mainly used for cotton shaping.
5. Ethephon
Ethephon is a kind of plant growth regulator that promotes ripening, which can effectively dwarf plants and promote the ripening and shedding of leaves and fruits. The results of many experiments showed that the application of ethephon could significantly reduce the length of basal Internode, thicken the base of stem, increase the number of supporting roots, decrease plant height and increase yield. At the same time, ethylene is used to control the growth of corn, which has the advantages of long application period and wide concentration range.
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