CAJ | 학술논문

选择不同生育期早、晚稻品种各8个，探讨机插秧条件下生育期表现、以及产量和物质生产力，为双季机插稻适宜品种的选择提供依据。结果表明，不同插秧机型对生育期没有影响。早稻品种生育进程差异表现在营养生长阶段。生育期较长的品种营养生长期较长，幼穗分化较晚；不同品种穗分化和发育期、籽粒灌浆期差异小。晚稻品种生育进程的差异表现在营养生长阶段和抽穗后的灌浆结实期。晚稻品种的营养生长期较短，灌浆结实期较长。早稻生育期112 d以下、晚稻120 d左右的品种为机插宜栽品种。机插稻谷产量、干物质总产量与生育期显著正相关，其相关系数，早稻分别为0．5730??和0．6680??，晚稻分别为0．7378???和0．5828??。相同生育期品种，稻谷产量和干物质产量存在差异。稻谷产量与各生育阶段的干物质日生产能力极显著正相关，相关系数随着生育进程推进提高。要获取双季稻机插高产，在选择适宜生育期品种的前提下，早稻品种应前期和全生育期干物质日生产力高，晚稻品种应后期干物质日生产力和全生育期干物质日生产力高。双季稻宽窄行机插优于等行机插。
선택불동생육기조、만도품충각8개，탐토궤삽앙조건하생육기표현、이급산량화물질생산력，위쌍계궤삽도괄의품충적선택제공의거。결과표명，불동삽앙궤형대생육기몰유영향。조도품충생육진정차이표현재영양생장계단。생육기교장적품충영양생장기교장，유수분화교만；불동품충수분화화발육기、자립관장기차이소。만도품충생육진정적차이표현재영양생장계단화추수후적관장결실기。만도품충적영양생장기교단，관장결실기교장。조도생육기112 d이하、만도120 d좌우적품충위궤삽의재품충。궤삽도곡산량、간물질총산량여생육기현저정상관，기상관계수，조도분별위0．5730??화0．6680??，만도분별위0．7378???화0．5828??。상동생육기품충，도곡산량화간물질산량존재차이。도곡산량여각생육계단적간물질일생산능력겁현저정상관，상관계수수착생육진정추진제고。요획취쌍계도궤삽고산，재선택괄의생육기품충적전제하，조도품충응전기화전생육기간물질일생산력고，만도품충응후기간물질일생산력화전생육기간물질일생산력고。쌍계도관착행궤삽우우등행궤삽。
Each eight varieties of early season rice and late season rice of different growth periods were se?lected,their yield and matter productive capacity under the condition of mechanical transplanting were studied, which gave a basis for the selection of applicative varieties of double cropping rice under the condition of me?chanical transplanting. The results showed that, the rice transplanter of different types had no effect on the growth period.The difference in the growth process of early season rice varieties showed on vegetative stage.The varieties of longer growth period had longer vegetative stage and delayed spike differentiation.The difference in spike differentiation period and growth,grain filling period was little among varieties of early season rice.The difference in the growth process in late season rice varieties showed on vegetative growth stage and grain filling period after the heading stage.The vegetative growth stage of late season rice was shorter,and its grain filling period was longer.The early rice varieties with the growth period less than 112 days and the late rice varieties with the growth period around 120 days were suitable for mechanical transplanting.The grain yield and dry mat?ter yield under mechanical transplanting were positively related to the growth period,the coefficients of correla?tion of early rice were 0.573 0??and 0.668 0??the coefficients of correlation of late rice were 0.737 8???and 0.582 8??. The varieties with same growth period,grain yield and dry matter yield had differences.The grain yield had significant positive correlation with dry matter production capacity of all the growth stages,the correlation co?efficient rose with the advance of growth and development.To obtain high-yield of double season rice,the varie?ties of higher daily dry matter productivity of the earlier stages and the whole growth period should be selected in early season rice,and the varieties of higher daily dry matter productivity of the later stages and the whole growth period should be selected in late rice in the premise of selecting varieties of suitable growth period. The way of mechanical transplanting of wide-narrow row excelled that of equivalent row in double season rice.