杂交中稻超多蘖壮秧超稀栽培高产原理探讨

Super High Yield Principles of Super Sparse Cultivation Associating With Super Multiple Tillers in Medium Hybrid Rice

以试验资料为基础，对作者近年来提出的“杂交中稻超多蘖壮秧超稀栽培新模式”的高产原理进行了系统探讨。结果表明：与常规多穴栽培相比，这一新型栽培模式能有效地提高秧苗素质，创造出更合理的田间群体结构，形成更为突出的单茎生长优势和更发达更具活力的根系以及更优良的穗部性状，很好地协调杂交水稻高产栽培中个体与群体、穗多与穗大等矛盾，实现杂交水稻的高产甚至超高产。

The super sparse cultivation(SSC)associating with super multiple tillers in medium hybrid rice is a new cultivation method which was established by the authors in recent years and a great deal of production practice has been done.This cultivation method can attain high yield or super high yield and the production cost is lower.In this paper,the super high yield principle of the new cultivation method is summarized with the data collected in our serial experiments.It is obvious that the new cultivation method,compared with the conventional close cultivation (CCC)method has several advantages:①improving seedling quality effectively and establishing more appropriate population structure;②more outstanding individual stem growth advantage,more flourishing and vigorous root system and more excellent spike properties;③Having coordinated contradictions between the individual plants and the population,and the multispikes and the big spikes,and being able to attain high yield or even super high yield of hybrid rice.