稻茬冬小麦分蘖成穗特性的研究

STUDIES ON TILLER DEVELOPMENT OF THE WINTER WHEAT FOLLOWING RICE

研究证明：采用主蘖并重是稻茬麦的高产途径。稻茬麦单株利用两个或两个以上的分蘖成穗，即一级分蘖的Ⅰ、Ⅱ及部分Ⅲ或二级分蘖的Ⅰ１及胚芽鞘分蘖等成穗，是可以实现的。每亩基本苗２０～２５万，成穗５０万左右，配以合理的肥水等管理措施。

Field studies with the winter wheat ( Triticum aestivum L.)cultivars 'Lumai 14','Lumai 15'and 'Yannong 15' were conducted to investigate the tiller development and its relationship to grain yield.It was shown that,to get high yield of the winter wheat following rice,equal attention should be paid to both ears of main culm and lateral tiller.In fact,two or more effective tillers,generally consist of primary tiller I,Ⅱ abd Ⅲ(or secondary tiller Ⅰ 1 and coleoptile tiller),could be obtained in each plant of the winter wheat.It was reliable that adoption of 2￣2.5×10 5 seedlings/mu grown under appopriate agrotechnics corresponding and 5×10 5 ears/mu was acceptable to obtain 450￣500kg/mu of grain yield of the winter following rice.