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- Title
8种除草剂对云南蓖麻田间杂草防除及产量的影响.
- Authors
高 梅; 代梦媛; 邓剑川; 李文昌
- Abstract
[Objective] The purpose of this paper is to solve the technical problems of weed control and screen out the best herbicides for providing a basis for the safe and efficient use of herbicide in Yunnan castor fields. [Method] Eight kinds of herbicide treatments were studied by detecting physiological indexes and the safety of the field survey, at the same time evaluating the use of herbicides influence on castor growth period, agronomic traits and yield. [Result] The experiment results showed that the plant height of castor and functional leaf SP AD (chlorophyll content) of the treatment group of 480 g/L trifluralin with dosage of ingredient 3240 g!hm2 decreased for 14 days after spraying the herbicide. Therefore, the use of soil-sealed herbicide could not meet the production needs in Yunnan. The plant height and SPAD for 14 days after using 25% rimsulfuron between the seeding stage and the budding stage of castor were not affected, and using 25% rimsulfuron with the dosage of ingredient 90 g/ hm2 +45% quizalofop-P-ethy with dosage of ingredient 62 g/hm2 not only had the best weed control effect in the fields, but also the main spike height, effective raceme number of single plant, main spike capsules, area yield (main spike), yield increase rate of castor were significantly higher than those of the control group. [Conclusion] Rimsulfuron alone after seedling is not enough to effectively control various weeds in Yunnan castor fields. Mixed rimsulfuron and quizalofop-P-ethyl together can improve the main agronomic characters and yield performance of castor. Rimsulfuron has a good application prospect in weed control of Yunnan castor fields after seedling.
- Subjects
YUNNAN Sheng (China); WEED control; RIMSULFURON; INDUCTIVE effect; CASTOR oil plant; OVULES; HERBICIDES; WEEDS
- Publication
Southwest China Journal of Agricultural Sciences, 2021, Vol 34, Issue 11, p2391
- ISSN
1001-4829
- Publication type
Article
- DOI
10.16213/j.cnki.scjas.2021.11.012