杂交中稻超多蘖壮秧超稀栽培关键技术问题探讨  

Studies on the Key Techniques of Super-sparse Cultivation of Medium Hybrid Rice with Super-multiple-Tiller Seedlings

作　　者：陶诗顺[1] 张清东[1] 陈德刚[1] 马均[2] 

机构地区：[1]绵阳经济技术高等专科学校,绵阳621000 [2]四川农业大学,雅安625014

出　　处：《绵阳经济技术高等专科学校学报》1999年第4期1-5,共5页Journal of Mianyang College of Economy & Technology

基　　金：四川省教委;绵阳市科委资助项目

摘　　要：以多年试验资料 ,对四川盆地两熟制杂交中稻“超多蘖壮秧超稀栽培模式”中几个关键技术问题进行了探讨 ,明确了两熟制杂交中稻超稀栽培必须以培育“超多蘖壮秧”为基础 ,而培育超多蘖壮秧的技术核心又在于保证秧苗在秧田阶段具有足够的单株营养面积 ;在培育超多蘖壮秧的基础上 ,大田栽培穴数可由常规栽培的 2 2 .5万～ 3 0 .0万穴 /hm2 降低至 1 0 .0万～ 1 8.0万穴 /hm2 ,且一般以每穴单株为好 ;超稀栽培合理的氮肥施用方法是在坚持重底早追的同时 。In this paper,the key techniques of a new cultivation method of medium hybrid rice in two-crops,i.e.the super- sparse cultivation associating with super-multiple-tiller seedlings,is discussed according to the data collected in serial experiments and production practice. The results show that the super-mutiple-tiller seedlings is the most important base of the new method and may be got only under the condition of enough nutrition area for each seedling in the seedling-bed stage;on the basis of the super-mutiple-tiller seedlings,the number of pits for seedling-transplanted per unit aera may be reduced from 22.5×10 4 ～30.0×10 4 pits/hm 2(conventional dense) to 10.5×10 4～18.0×10 4 pits/hm 2(super-sparse dense),keeping single seedling per pit in fertiler fields and double seedlings in barrener fields;the recommened applying fertilizer method is “heavy base manure,early tillering manure and complementary ear manure and grain manure”.

关 键 词：杂交中稻 超稀栽培 超多蘖壮秧 中稻 施氮方法 

分 类 号：S511.320.6[农业科学—作物学]