This year, the drought phenomenon was severe after the transplanting of late rice, and some late stems had obvious early earing. The tillering period of late rice cultivated by throwing sorghum is long, and the development progress of individuals is different, and the time of heading and heading will be longer. However, if the plant growth regulator "920" is used in the middle and late stages of late rice growth, these contradictions can be alleviated, and the headings are neat and the maturity is neat. In this way, it is beneficial to avoid the cold dew wind, increase the seed setting rate and increase the yield, and is conducive to the timely sowing of wheat, rapeseed and other post-cropping crops to achieve high yield of seasonal crops. In view of the actual situation of late rice this year, it should be sprayed reasonably according to different situations.
The aging field of the seedlings should catch the middle of the heading
Some late-season rice was over-aged and aged due to drought, and the main stem had obvious early-earning phenomenon. The growth of the field was very inconsistent. The main stems are early headed, the nutrition will be concentrated in the early rice heading, and the late tillering is in a state of inhibition. Spraying "920" on this kind of field should catch the "920" 1.5g per acre when heading 40%-50%, and promote the late emergence of seedlings into early panicles and more ears. Spraying "920" can promote the elongation of the ear of the rice ear, reduce the inclusion of the neck and loose the layer of the ear, which is conducive to pollination and fruiting.
The dry field must catch the beginning of the break
In some places, the summer and autumn droughts are long. If the fields are unable to be irrigated due to drought and water shortage before and after the beginning of the slash, the late rice may have a “difficult to produce†phenomenon, that is, the ears of some late rice or some rice ears cannot be extracted due to drought and water shortage. death. If "920" is not applied, the rice grains enclosed in the sheath will not become pollinated and fertilized in time, and will generally become empty granules, which is the phenomenon of "neck-neck" often said in production. In addition to the dry fields, due to improper application of pesticides, such as excessive application of triadimefon and other bactericidal agents before heading or rice fields using weeds such as Weiba and thrips to affect the growth of late rice, there will also be a phenomenon of “neckingâ€. This will result in insufficient elongation of the cob, and the spikelets in the lower part of the rice ear will become empty in the sheath. Generally, it should be grasped in the late rice heading 20%-30%, combined with drought conditions, severely dehydrated fields with 2 grams per acre, less dehydrated fields with 1.5 grams per acre, first dissolved with a small amount of strong alcohol or alcohol, and then water 40 kg diluted, sprayed on the leaves on cloudy or evening, can play a role in midwifery, so that the "Neck" ear is extracted.
Throwing the field to catch up in the early stage of heading
The use of transplanted late rice tends to lead to inconsistent growth, and the development of the field and the field, individual and individual are not the same. Applying "920" to this type of late rice field can promote neatness into ear. Generally, it is sprayed at 30%-40% of the heading of late rice, and is dissolved in alcohol with "920" 1g per acre, and sprayed with 40 kg of water. It should be noted that the "920" dosage should be strictly controlled for this type of field, and the paddy rice fields that are not drained should be used with caution to prevent the root support from decreasing, causing the late rice to fall and reduce production.
Premature aging late rice field combined with foliar fertilizer
Late rice premature aging is a relatively common phenomenon. If plant growth regulators or other exogenous hormones are added in the later stage, it can significantly improve the later root activity, promote growth and delay aging. When spraying foliar fertilizer in the late rice, the acre is dissolved in alcohol with “920†1-1.5 g, adding 200 g of potassium dihydrogen phosphate, 250 g of urea, 50 kg of water, after milk ripening or after the ear Uniform spray on the foliage, enhance the photosynthetic function of the leaves, improve the seed setting rate, and have obvious anti-aging effects.
It is worth noting that the "920" is generally not applied to the late rice that can safely serve before September 10-15. It needs to be used only once in the middle and late stages of late rice, and generally does not need to be reused. For the late rice fields that have been overgrown and have been ripe for late maturity, "920" cannot be used.
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