摘要
1993~1994年以华苎2号为材料,进行了4种施氮水平和3种栽植密度的试验,结果表明,在每hm ̄2施纯氮0~472.5kg范围内,随施氮量增加,茎、叶生长加速,分蘖增多,各产量因素的构成比较协调,原麻产量增加,但纤维支数有所下降。每hm ̄2产原麻2250kg的最佳施氮量为375kg氮。每hm ̄2栽植密度在22500蔸至37500蔸范围内,旺长期生长速度是密植快于稀植,分蘖数、有效茎数、鲜茎重、干物重、原麻产量等是密植高于稀植,纤维品质密植优于稀植,但随着麻龄延长,密植增产效应逐渐降低。
The experiments of 4 N application levels and 3 planted densities were made from 1993 to 1994.The results showed, In the range of 0 ̄472.5 kg/hm2 N application levels,the growth of stem and leaf speeded up, tillers and fiber yield increased, but the fiber counts of Huazhu 2 decreased with N application content. In the range of 22500 ̄37500 hills per hm2, increasing density could help to raise the growth speed in the vigorous growing period, the numbers of tiller, the effective tillers, the weights of fresh stem and dry matter,and improve the fiber quality, but these effects gradually dwindled with ramie planted year long.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
1996年第4期328-332,共5页
Journal of Huazhong Agricultural University
基金
农业部和湖北省科委"八五"重点资助
关键词
苎麻
华苎2号
施氮量
栽植密度
产量
品质
ramie, Huazhu 2, N application amount, planted density, yield,quality