Can 2-methyl-4-chlorine be used at the 2-leaf stage of rice?
Gramineous crops such as rice are sensitive to 2-methyl-4-chloride before the 3-leaf stage, and improper use is easy to cause drug damage to crops and heart leaf deformities. After 4-leaf stage, the resistance to 2-methyl-4-chlorine gradually increases with the increase of leaf age. The drug resistance was the strongest at the peak tillering stage, and the sensitivity increased gradually after jointing. Therefore, it is generally required to apply 2-methyl-4-chloride from 4-leaf stage to jointing stage in rice production, and the dosage can not be increased at will to ensure the safety of rice.
Nongdos 56% 2-methyl-4-chloro-sodium soluble powder of Niufam Co., Ltd., Australia, is registered for the control of broadleaf weeds and Cyperaceae weeds in transplanting paddy fields. The recommended dosage of pure medicine is 420-630 grams per hectare, equivalent to 50-75 grams per mu. It is understood that the drug is safe for rice, and it is also safe for rice when it is used appropriately at low age. Generally, 20 grams per mu can be used at the stage of 2 leaves and 1 heart, and 30 grams per mu at the stage of 3 leaves and 1 heart. 40-50 grams per mu can be used after the 4-leaf stage of rice to before jointing.
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ⅱ you 128 (Rice)
Education unit: Rice Institute of Guangdong Academy of Agricultural Sciences. Approval: it was approved by Guangdong crop Variety approval Committee in 1998 and by the National crop Variety approval Committee in 1999. Variety approval number: national examination and approval rice 990008. Variety source: Ⅱ-32AX Household Hui128. Characteristics: it belongs to late-maturing temperature-sensitive hybrid rice combination. The plant height is 100ml 105 cm, the plant type is compact and the stem is stout. 163000 effective panicles per mu and 140mur150 grains per panicle.
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The leading variety of Dachun rice in Wenjiang in 2008
In order to determine the leading rice varieties suitable for our region in 2008, promote the construction of the demonstration film of "planting, three and four" high-yield projects, and do a good job in variety selection, on August 31, our district organized and held an on-site investigation meeting of new rice varieties test. The attendees first visited the demonstration film of the "planting, yield and yield four" high-yield project in Zhanqi Village, Tangchang Town, Pixian County, and the "Sichuan Variety Regional Test Station" in Shuangliu Jiujiang Town, and then visited the field site of the new rice variety experiment in Helin Village, Wanchun Town, Pixian County. 18 new rice varieties organized in our district
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