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首页> 外文会议>International Peat Congress; 20040606-11; Tampere(FI) >THE EFFECT OF CU STATUS IN UPLAND RICE GROWN ON PEAT ON PANICLE EMERGENCE, GRAIN YIELD AND SEED QUALITY
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THE EFFECT OF CU STATUS IN UPLAND RICE GROWN ON PEAT ON PANICLE EMERGENCE, GRAIN YIELD AND SEED QUALITY

机译：旱地水稻上铜态对水稻萌发，籽粒产量和种子品质的影响

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A study was conducted to investigate the effect of Cu status and medium pH on panicle emergence, seed yield and seed quality in upland rice grown on peat from Rawapening, Central Java. The experiment utilized the randomized factorial design with eight treatments and three replications. The Cu rate as the first factor consisted of Cu_0 (no Cu application), Cu_1 (1.25 ug Cu.g~(-1)), Cu_2 (5 ug Cu.g~(-1)) and Cu_3 (25 ug Cu.g~(-1)), while the peat pH as the second factor consisted of pH 5.35 (original pH) and pH 7.0 (increased by liming). The results showed that Cu status was very important in upland rice, especially in the generative phase. Panicles emerged earlier in plants on the peat medium treated with Cu as compared with no Cu application. At 70 days from planting, the number of panicles emerging increased from Cu_0 to Cu_1 and from Cu_0 to Cu_2 by 279.0% and 359.2%, respectively, whereas at 75 days from planting, increases in the number of panicles emerging were 133.3% and 166.7%, respectively. Cu application affected yield components such as filled seed weight and number of filled seed per plant. Increasing Cu rate from Cu_0 to Cu_1 resulted in increases of 127.6% and 112.7% in the two yield components, respectively. Increasing Cu rates did not significantly affect growth of subsequent seedlings germinated from seeds produced by the upland rice, but there was a tendency that seed weight affected the percentage of seed germinating, especially at 3 days after sowing. The lower the seed weight, the lesser the number of seeds germinating. Increasing pH of the peat substrate to 7.0 decreased vegetative growth parameters of the upland rice, total tiller number, total filled grains per plant and percentage of filled grains, increased percentage of empty seeds, but did not affect 100-seed weight.
机译：进行了一项研究，以研究铜的状态和中等的pH值对中爪哇拉瓦芬的泥炭上生长的旱稻的穗出苗，种子产量和种子质量的影响。实验利用了随机因子设计进行八次治疗和三次重复。作为第一因素的Cu速率由Cu_0（无Cu施用），Cu_1（1.25ug Cu.g〜（-1）），Cu_2（5ug Cu.g〜（-1））和Cu_3（25ug Cu）组成。 g〜（-1）），而作为第二因素的泥炭pH值则由pH 5.35（原始pH）和pH 7.0（随石灰增加）组成。结果表明，铜态在旱稻中非常重要，特别是在生长期。与不施用铜相比，在用铜处理过的泥炭培养基上的植物中出现穗较早。种植后第70天，出穗的数量分别从Cu_0到Cu_1和从Cu_0到Cu_2分别增长了279.0％和359.2％，而在种植后第75天，出穗的数量分别增加了133.3％和166.7％ ， 分别。铜的施用影响产量构成部分，例如饱满种子的重量和每株植物的饱满种子的数量。从Cu_0到Cu_1的Cu速率增加导致两种产量成分分别增加127.6％和112.7％。 Cu含量的增加并没有明显影响陆地稻产生的种子随后萌发的幼苗的生长，但是存在一种趋势，即种子重量影响种子发芽的百分比，尤其是在播种后3天。种子重量越低，发芽的种子数量就越少。将泥炭底物的pH值提高到7.0会降低陆地稻的营养生长参数，总分till数，每株植物的总籽粒和籽粒的百分比，增加空籽的百分比，但不会影响100种种子的重量。

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