摘要
１９７８～１９９６年， 以 ２５个早、中籼良种为材料，先后进行 １８年高产栽培试验，研究了川东南冬水田地区籼稻良种高产栽培规律。结果表明：（１）籼稻高产栽培技术中，品种间播种期、播种量、移栽叶龄、每穴栽秧量和施氮量的差异不显著，而栽插密度和最适有效穗数品种间差异极显著；（２）高产栽插密度分别与施氮量和品种着粒数是极显著负相关关系，高产最适有效穗数与品种着粒数是极显著负相关关系，已知品种着粒数就可确定其主要高产栽培技术；（３）品种着粒数决定高产栽培密度和有效穗数，是由于着粒数分别与倒１、２、３叶的长、开张角、披垂度是显著或极显著正相关，即品种着粒数越高，株型越松散，反之，株型越紧凑。
The high yield cultivation regularity of indica rica varieties in paddy field rations in southeast Sichuan was studied through high yield cultivation trials using 25 varieties of early-middle indica rice during 1978 to 1996. The results indicated difference among varieties for sowing date, sowing rate, transplanting leaves age, the amount of N applied and transplanting seedlings per hill was not significant (P≤0 .05), but significant for the transplaning hills and the effective panicles Per ha for high yield (P≤0.05 ). Significantly negative correlations were observed between the high yield tyansplanting density and N application, the grains per panicle of varieties. There were significantly negative correlation between the effective panicles for high yield and the grains per panicle of varieties. Known a variety's grains per panicle of indica rice, we could make a decision to each variety chief cultivation technologies for high yield, because there were significantly positive correlations between grains per panicle of varieties and the length, open angle, drooping angle of 1st, 2nd and 3rd leaves from top. In conclusion, the mere the veriety's grains per panicle was, the sparser plant type was.
出处
《西南农业学报》
CSCD
北大核心
2000年第3期12-17,共6页
Southwest China Journal of Agricultural Sciences
关键词
籼稻
高产栽培
优良品种
栽培技术
winter paddy field
Indica rice variety
high yield cultivation
regularity
