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豫芝4号芝麻现蕾前积蓄的光合产物对产量贡献很小。现蕾至终花约40天内是芝麻产量形成的关键时期。这一时期营养生长和生殖生长竞争激烈,对外界环境敏感,栽培措施应以调节干物质分配流向为主,争取早发、稳长。封顶后,全株及蒴果干物质积累仍维持较高水平,延长后期光合器官功能,防止早衰,将有利于减少秕粒,提高千粒重。
Yuzhi No. 4 sesame bud accumulation before photosynthetic products contribute little to yield. Squash to the final flower within about 40 days is the key period of the formation of sesame production. During this period, the competition between vegetative and reproductive growth was fierce and sensitive to the outside world. Cultivation measures should focus on regulating the flow of dry matter and strive for early onset and stable growth. After capping, the whole plant and the accumulation of dry matter of the capsule still maintain a high level, prolonging the function of the photosynthetic organs in the late stage and preventing the premature aging, which will be beneficial to reduce the grains and improve the 1000-grain weight.