有机生产制度下旱地移栽直接播种稻品种的生产性能

Amit A Shahane, UK Behera
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引用次数: 0

摘要

田间试验于2021年秋季在梅加拉亚邦基尔德姆库莱农业学院(caui)教学农场进行。本试验旨在研究旱稻品种(XRA 77922、XRA 87925、XRA 87928、XRA 752PJ6、XRA 37923和XRA 38967)在因侵蚀和人流量造成的迁移土壤中的表现。6个水稻品种在生长性状和产量性状上均无显著差异;但由于土壤侵蚀引起的非生物胁迫(深度浅,砾石比例高,持水量低,土壤肥力低),导致它们的生长和性能都不理想。次优生长导致水稻品种对稻瘟病的易感性、杂草数量和数量的增加以及白蚁的侵害。穗肥力率低(44.1% ~ 44.4%),灌浆小穗25.3 ~ 28.0(粒数),分蘖数212 ~ 221 /m2,播后60 d干物质22.7 ~ 25.7 g/m2,开花灌浆期叶片营养生长和干燥不良,籽粒和秸秆产量184.3 ~ 188.7 kg/ha ~ 671.3 ~ 676.0kg/ha均表现出上述胁迫的影响。土壤侵蚀是国家普遍存在的现象,开垦旱地增加了土壤侵蚀和肥力损失的机会。这迫切需要额外的努力以及作物管理实践,通过在国家种植新的高产品种和收获基因型x环境的正相互作用来提高旱地直接播种水稻的采用和水稻生产力的提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance of upland sown direct seeded rice varieties grown in displaced soil under organic production system
The field experiment was conducted at Instructional Farm of College of Agriculture (CAU-I), Kyrdemkulai, Meghalaya in kharif season of 2021. The objective of experiment was to study performance of upland rice varieties (XRA 77922, XRA 87925, XRA 87928, XRA 752PJ6, XRA 37923 and XRA 38967) in displaced soil due to erosion and human traffic. All six rice varieties didn't show any significant different in growth and yield attributes; while all of them affected significantly due to abiotic stress arose due to soil erosion (shallow depth, high proportion of gravels, low water holding capacity and low soil fertility) leading to their sub-optimal growth and performance. The sub-optimal growth leads to susceptibility of rice varieties to blast disease, higher weed population and their flushes as well as termite infestation. The low fertility percentage of panicle (44.1 to 44.4 %), 25.3 to 28.0 (no.) filled spikelets, 212 to 221 tillers /m2, 22.7 to 25.7 g/m2 dry matter at 60 days after sowing, poor vegetative growth and drying of leaves towards the flowering and grain filling stage and grain and straw yield of 184.3-188.7 kg/ha to 671.3-676.0kg/ha showed the effect above mentioned stresses. The soil erosion is regular phenomenon in state and making field clear for upland cultivation increase the chances of soil erosion and fertility losses. This urge the need for additional effort along with crop management practices to enhance adoption of upland direct seeded rice and improvement in rice productivity by growing of new high yielding varieties in state and harvesting the genotype x environment positive interaction.
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