Rapeseed in the middle and late stages of chemical control
A reader of Ruocha Town, Rudong County, came to the phone on March 1st: rapeseed is 40 cm high, and it is prosperous. Can it be sprayed with paclobutrazol?
A reader of Huai'an City came to the phone on March 11th: The rapeseed is in the late stage of convulsions, it is about to bloom, and it is prosperous. Can it be controlled by paclobutrazol?
Xia Guoming, Shuoji Town, Suining County, came to the phone on March 14th: The rapeseed was high, and some of the fields just started to bloom. Some of the fields just started to twitch, can they be controlled by medicine?
Rational application of paclobutrazol, uniconazole and other drugs at the initial stage of rapeseed can reduce the height of plants and branching points, and the anti-falling effect is obvious, and the number of pods per plant can be increased, which has a certain yield increasing effect. In the early stage of rapeseed twitching (below 20 cm), use 15% paclobutrazol wettable powder 30g or 5% uniconazole wettable powder 40g plus water 40kg per mu. In the middle and late stages of rapeseed twitching, the height is 40 cm or more. Do not use the paclobutrazol and other drugs to control it. Otherwise, it will not reduce the length of the internodes below the effective branching point, and it will have no obvious effect on improving the lodging resistance of rapeseed, and will inhibit the effective branching. The length of the segment and the length of the spindle reduce the number of effective corners, resulting in reduced production.
According to Zhu Zhiwu and Others in the Agricultural Technology Promotion Center of Jiangdu District, Yangzhou City, when the rapeseed was 10-20 cm high, 40-50 cm, 70-80 cm, respectively, 2 g of alkydazole and 40 kg of water were sprayed per mu. When the water was sprayed 10 to 20 cm, the water was sprayed as a control. As a result, each treatment inhibited the height of the plants, which were 4 cm, 7 cm, and 15 cm shorter than the control. Different parts of the plant are inhibited at different times, and the treatment is 10-20 cm high, which mainly inhibits the internode length below the effective branching point, so that the effective branching node is reduced, while the effective branching length is elongated; At 50 cm, the effect of the drug on the effective branching point was not obvious; when the height was 70-80 cm, the drug had no significant effect on the inter-segment change below the effective branching point, mainly inhibiting the length of the effective branching segment and the length of the spindle. Spraying uniconazole at different times had different effects on the yield of rapeseed. When the rapeseed was 10-20 cm higher, the dosage was 2.6% higher than that of the control. When the height was 40-50 cm, the dosage was reduced by 5.9% compared with the control. When the dose was ~80 cm, the dose was reduced by 10.8% compared with the control.
Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
Fine chemical industry is one of the most dynamic emerging fields in the chemical industry today, and it is an important part of new materials. Fine chemical products have many types, high added value, wide application and high degree of industrial correlation, which directly serve many industries of the national economy and various fields of high-tech industries. Vigorously developing Fine Chemicals has become a strategic focus for countries around the world to adjust the chemical industry structure, enhance the industrial level of a chemical industry and expand economic benefits. The state will issue relevant policies in a timely manner to build a new technology innovation organization that combines production, education and research - the National Fine Chemical Industry Technology Innovation Strategic Alliance, in order to promote the optimization and upgrading of the national fine chemical industry structure and enhance the overall competitiveness of the industry. The rate of fine chemical industry (the ratio of fine chemical output value to total chemical output value) has become an important indicator to measure the development of a country or region's chemical industry and the level of chemical technology.
4-Amino-6-Chloro-1,Benzoic Acid,Cas 761446-44-0
Shijiazhuang Dingmin pharmaceutical Sciences Co.,Ltd , https://www.dingminpharma.com