CAJ | 학술논문

以宁粳3号为材料，采用盆栽方式，设置秸秆还田（秸秆还田和秸秆不还田）和栽插方式（常规手栽和机插）两种处理，分析了栽插方式对秸秆还田条件下水稻幼苗生长及养分吸收的影响。结果表明，秸秆还田降低了水稻幼苗单株茎蘖数、株高、干物质积累以及氮、磷、钾含量。栽后20 d，秸秆还田幼苗单株茎蘖数、地上部和地下部干物质积累以及根系活力分别较秸秆不还田处理降低17.3%、29.4%、11.5%和14.0%。秸秆还田条件下，与常规手栽相比，机插水稻幼苗地上部干物质积累、单株茎蘖数、株高和地上部氮含量降低。栽后20 d，机插处理地下部干物质量和根系活力分别降低57.1%和26.1%。抑制根系生长、降低根系活力，可能是秸秆还田条件下机插稻僵苗发生较为普遍的一个主要原因。
이저갱3호위재료，채용분재방식，설치갈간환전（갈간환전화갈간불환전）화재삽방식（상규수재화궤삽）량충처리，분석료재삽방식대갈간환전조건하수도유묘생장급양분흡수적영향。결과표명，갈간환전강저료수도유묘단주경얼수、주고、간물질적루이급담、린、갑함량。재후20 d，갈간환전유묘단주경얼수、지상부화지하부간물질적루이급근계활력분별교갈간불환전처리강저17.3%、29.4%、11.5%화14.0%。갈간환전조건하，여상규수재상비，궤삽수도유묘지상부간물질적루、단주경얼수、주고화지상부담함량강저。재후20 d，궤삽처리지하부간물질량화근계활력분별강저57.1%화26.1%。억제근계생장、강저근계활력，가능시갈간환전조건하궤삽도강묘발생교위보편적일개주요원인。
Pot experiment was conducted using a japonica rice cultivar Ningjing 3, to investigate the effect of transplanting pattern on growth and nutrients uptake of rice seedlings under wheat straw returning. The results showed that the tiller number, plant height, dry weight and nutrients uptake were decreased under wheat straw returning. Compared with the non-straw returning, the tiller number, dry weight of upper and underground parts, and root activity of rice seedlings with wheat straw returning 20 days after transplanting were decreased by 17.3%, 29.4%, 11.5%, and 14.0%, respectively. Compared with conventional hand transplanting, the upper part dry weight, tiller number, plant height and upper part nitrogen content of machine transplanting decreased under wheat straw returning condition, the root dry weight and activity 20 days after transplanting were decreased by 57.1%and 26.1%, respectively. The seedling growth of machine transplanting rice is more vulnerable to be stunted by short-term straw returning, which is caused by inhibited root growth and impaired root activity.