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通过田间试验,研究了种植密度、不同的角果着生部位对秦优7号籽粒产量和品质的影响。结果表明:种植密度由22.5万株/hm2增加到30万株/hm2,株高、分枝部位、分枝数、主花序长度、结果密度、主花序角果数、分枝角果数、主花序角粒数、分枝角粒数、主花序产量、分枝产量均有所降低,密度优势明显,主花序优势明显,产量增加23.07%。在相同密度下,秦优7号的亚油酸、亚麻酸、饱和脂肪酸、硫苷的变化,总是主花序高于分枝;按角果同一着生部位籽粒中油酸、亚麻酸、饱和脂肪酸、硫苷、含油量的变化,22.5万株/hm2密度处理的高于30万株/hm2,而蛋白质的变化则相反。因此,可以通过适当增加秦优7号的种植密度,凭借高密度优势、角粒数优势、千粒重优势,主花序的增产优势,协调好个体与群体的关系,可充分发挥秦优7号的增产优势、获得高产,增加产油量。此外,适当增加密度还可以有效降低株高,减少单株有效角果数,有利于机械收割操作和减少损失。
Field experiments were conducted to study the effect of different planting density and parts on the yield and quality of Qinyou 7 grain. The results showed that the plant density increased from 225,000 to 300,000 plants / hm2. The plant height, branch number, number of branches, length of main inflorescence, fruit density, number of main inflorescences, number of branches, The number of anthers, inflorescence gibbons, main inflorescences yield and branching yield all decreased, and the density advantage was obvious. The main inflorescences had obvious advantages, yield increased by 23.07%. Under the same density, the changes of linoleic acid, linolenic acid, saturated fatty acid and glucosinolate in Qinyou 7 were always higher than those in main branches. The contents of oleic acid, linolenic acid, saturated fatty acid , Glucosinolate, oil content changes, 225000 plants / hm2 density treatment of more than 300000 plants / hm2, and protein changes in the opposite. Therefore, by appropriately increasing the planting density of Qinyou 7, with the advantages of high density, number of grains per g grain, superiority of 1000-grain weight and yield increase of main inflorescences, the relationship between individuals and groups can be coordinated to give full play to the yield increase of Qinyou 7 Advantages, access to high yield, increase oil production. In addition, the appropriate increase in density can also be effective in reducing plant height, reducing the number of effective pods per plant, is conducive to mechanical harvesting operations and reduce losses.