摘要
采用混杂设计研究淮豆４ 号在播期、密 度、施肥三因素不同水平下，产量结构、叶面积系数及干物质积累分配情况，探索出２００ｋｇ／亩以上高产栽培的合理生理指标：叶面积指数分枝期（ Ｖ８ ）２．０－ ２．１，在开花盛期达到最高４．１－ ５．０，然后缓慢下降，并维持在３．５－ ４．２ 之间，干物质积累与分配应是源多库足，分枝２．８－ ３．５ 个，单株结荚３０ 个左右，每荚粒数以２．２ 为宜，百粒重２２ｇ 以上。相应栽培模式是：６ 月上中旬适时早播，密度每亩１．７５ 万，初花期追尿素４ｋｇ／亩，后期根外追肥防早衰，提高百粒重。
Effect of compomnent of yield, LAI,dry matter weight, flower and pod weight on the soybean variety 'Huaidou 4' were studied under different levels of sowing stage, density and fertilizer, The good physiological bases for high-yield type of 'Huaidou 4' is that LAI lies at 2.0-2.1 at true leaf stage, and maxium LAI should become 4.1-5.0 at blooming stage, and maintain 3.5-4.2 at pod-filling stage. Dry matter accumulation and disstribution should have enough souce. Branches lie around 2.8-3.5, The number of pods per plant around 30, the seeds per pod is 2.2, and the weight of 100 seed is 22 gram. The cultivation mode for the good physiological bases is that soybean should be sowed in 1-15th of June, density is 175,000 plants per mu, amount of top dressing fertilizer in initial flowering stage is 4.0kg per mu, and foliage dressing would be applied at the pod filling stage if needed.
出处
《大豆科学》
CAS
CSCD
北大核心
1999年第3期243-247,共5页
Soybean Science
关键词
大豆
高产栽培
生理指标
夏大豆
Soybean
High-yielding cultivation
Physiological character
