摘要
选择江苏中部地区3个县10个机插稻育秧点为试验点,研究床土培肥前后碱解氮、速效磷和速效钾的含量与秧苗质量关系。结果表明;供试机插稻各育秧试点间床土培肥前后三要素速效养分含量差异大,养分过剩和不足的情况共存,表明床土培肥有其必要性和重要性;根据机插稻中苗壮秧的苗高、发根力和糖氮比等指标,推定床土培肥的碱解氮指标为250-300 mg·kg-1。
The experiment was carried out to investigate the effect of the contents of readily available N, P, K before/after fertilizing on rice seedling quality at 10 trial sites in three counties in Jiangsu province. The results showed that there was significant difference in contents of available N, P, K in seedbed soil before/after fertilizing, involving both surplus and shortage of them, among various trial sites, showing the importance and essentiality for fertilizing according to soil type. To meet the requirements for vigorous seedling indices as seedling height, root initiating ability and ratio of sugar to nitrogen, the favorable content of alkali-hydrolysable N in seedbed soil should be 250-300mg · kg^-1.
出处
《扬州大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2005年第4期56-60,共5页
Journal of Yangzhou University：Agricultural and Life Science Edition
基金
财政部
农业部跨越计划资助项目(2001-26)国家粮食丰产科技工程资助项目(2004BAS20A03)
关键词
机插稻
育秧床土
基础地力
培肥
秧苗素质
mechanical transplanted rice
seedbed soil, basic soil productivity, fertilizing, seedling quality
