中国稻米
中國稻米
중국도미
China Rice
2015年
5期
75-78
,共4页
高海拔%粳稻%产量构成%差异分析
高海拔%粳稻%產量構成%差異分析
고해발%갱도%산량구성%차이분석
high altitude%japonica rice%yield components%variance analysis
对不同海拔条件下高海拔粳稻的产量构成因素进行了比较分析。结果显示，在不同海拔条件下高海拔粳稻产量构成因素的表型及与产量的相关性和通径系数均存在较大差异。在产量构成因素中，结实率（132.39%）、有效穗数（113.78%）对海拔的反应最为敏感，千粒重次之（106.78%），而每穗总粒数（102.29%）则较稳定。造成高海拔粳稻产量下降的主要原因是结实率和有效穗数的下降。因此，可通过选择有效穗数和结实率对海拔反应较为迟钝的品种类型来提高高海拔粳稻的稳产性。
對不同海拔條件下高海拔粳稻的產量構成因素進行瞭比較分析。結果顯示，在不同海拔條件下高海拔粳稻產量構成因素的錶型及與產量的相關性和通徑繫數均存在較大差異。在產量構成因素中，結實率（132.39%）、有效穗數（113.78%）對海拔的反應最為敏感，韆粒重次之（106.78%），而每穗總粒數（102.29%）則較穩定。造成高海拔粳稻產量下降的主要原因是結實率和有效穗數的下降。因此，可通過選擇有效穗數和結實率對海拔反應較為遲鈍的品種類型來提高高海拔粳稻的穩產性。
대불동해발조건하고해발갱도적산량구성인소진행료비교분석。결과현시，재불동해발조건하고해발갱도산량구성인소적표형급여산량적상관성화통경계수균존재교대차이。재산량구성인소중，결실솔（132.39%）、유효수수（113.78%）대해발적반응최위민감，천립중차지（106.78%），이매수총립수（102.29%）칙교은정。조성고해발갱도산량하강적주요원인시결실솔화유효수수적하강。인차，가통과선택유효수수화결실솔대해발반응교위지둔적품충류형래제고고해발갱도적은산성。
The yield components of high altitude japonica rice in different altitude areas were analyzed. The results showed that the phenotype of yield components and its correlation coefficients and path coefficients with yield were significantly different. The seed setting rate (132.39%), the effective panicles (113.78%) are more sensitive to latitude, follows by 1000-grain weight (106.78%), while the total grains per panicle (102.29%) is relatively stable. The main reasons for lower yield of japonica rice at high altitude are mainly due to the decline in seed setting rate and effective panicles. Therefore, we can choose the japonica varieties, which seed set-ting rate and effective panicles are low sensitive to latitude, to improve the yield stability at high altitude region.
