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以金优527、昌米011、9优418和合系39共4种不同类型水稻为材料,研究了在西昌和雅安2种不同生态条件下栽培密度对水稻根系形态的影响,分析了根系形态与产量的相关性.研究表明:生态条件、栽培密度对水稻根系形态各个指标的影响因水稻品种不同存在差异,西昌、雅安两地水稻产量和群体总根数、群体总根长、群体根干质量均呈正相关;西昌试验地与雅安试验地相比,水稻根系更发达,群体总根数平均多18.3%,群体总根长平均大13.8%,单茎根干质量平均高91.4%;水稻群体总根数、群体总根长、群体根干质量等群体根系形态性状对水稻产量起着决定作用,随着栽培密度增加,西昌和雅安水稻群体总根数、群体总根长、群体根干质量均增加.
The effects of planting density on the morphology of rice roots under two different ecological conditions of Xichang and Ya’an were studied with four different types of rice, Jinyou 527, Changmi 011, Youn 418, and Xianyou 39, and the effects of root morphology and The results showed that the effects of ecological conditions and planting density on rice root morphology were different due to different rice varieties. The yield of rice and the total population of the population, the total root length of the population, the root dry weight of the population Compared with Ya’an experimental land, the root system of rice was more developed in Xichang experimental area. The total root number of the population was 18.3% more on average. The total root length of the group was 13.8% larger on average, and the root dry weight of single stem was 91.4% higher on average. Root morphology, population total root length, population root dry weight and other community root morphological traits play a decisive role in rice yield. With the increase of planting density, the total root number, total root length and root dry mass of Xichang and Ya’an increase.