摘要
对陇中半干旱区春小麦在不同补灌条件下的籽粒灌浆特性、产量及其产量性状进行了分析比较研究。结果表明，补灌条件下春小麦具有较大的库容、较高的平均灌浆速率和较长的叶功能或（灌浆持续期），而且随补灌量的增大，这种效果更加明显；等量水分分次补灌在试验中表现出了明显的优势，籽粒的平均灌浆速率、籽粒体积、灌浆持续则以及产量和产量性状均高于同量水一次性补灌。研究表明，春小麦最佳补灌时期为孕穗期，90mm水在拔节期和孕穗期分次施用具有较好的生产效果。
The field experiment were carried out in Dingxi county, Gansu. The result ofexperiment showed that spring wheat had larger sink, higher average filing rate and longer fillingduration of under Suppleinentary Irrigation (SI). There were significant difference among severaldifferent SI treatment. The water of equal amounts used at different period were superior to whichused at one period; average filling rate, grain volume, filling duration and grain yield of former were higher than that of later. The productive effects of supply water at one period, high quite treatment were superior to lower, booting superior to jointing.
出处
《甘肃农业大学学报》
CAS
CSCD
1999年第4期378-382,391,共6页
Journal of Gansu Agricultural University
基金
中华农业科教基金!"甘肃省中部旱农区降雨集聚与节水农业技术研究"97-01-03-06
关键词
陇中
集雨补灌
春小麦
灌浆特性
Logistic函数
the central Gansu
supplementary irrigation with catchment rainfall, spring wheat, filling properties
logistic equation
