鲁梅克斯K-1杂交酸模的施氮模型选择及氮肥推荐  

SELECT OF MODEL AND RECOMMENDATION OF NITROGEN FERTILIZATION FOR RUMEX K-1 HYBRID DOCK

作　　者：齐孟文[1] 王念萍[1] 彭根元[1] 石定燧[2] 杨茁萌[2] 安沙舟[2] 

机构地区：[1]中国农业大学,北京100094 [2]新疆农业大学,乌鲁木齐830052

出　　处：《核农学报》2001年第6期351-354,共4页Journal of Nuclear Agricultural Sciences

基　　金：国家自然科学基金项目 (39870 6 0 4)

摘　　要：对鲁梅克斯K 1杂交酸模的氮肥肥效试验表明 ,氮素营养是影响其产量的显著性因子 ,酸模的产量随施氮量增加近似线性地增加 ,达到最大值后在较大范围基本保持不变 ,氮肥推荐模型可采用线性加平台模型。植株的粗蛋白含量也在一定范围随施氮量增加显著增加 ,从对照的 2 1 98%提高到 2 8 2 3 %。植株的根冠重量比较大 ,在最佳施氮水平N3 ( 60 0kg·hm- 2 )下为 53 66%。根的粗蛋白的含量由对照的1 1 2 6%增加到N5( 90 0kg·hm- 2 )的 3 0 2 1 % ,表明酸模的根具有一定的储存和调控氮的能力 ,这可能是作物具有较强的耐氮性原因之一。The effects of fertilizer N on Rumex K 1 hybrid dock were studied and the results showed that nitrogen was a significant factor that would affect yield of Rumer K 1. The yield of dock linearly increased with application of fertilizer N until a maximum, then kept unchanged in a big range, model selected for recommendation of nitrogen fertilization was a model of linear plus plateau. Coarse protein content of the plant also increased significantly with N fertilization from 21 98% (CK) to 28 23%. Ratio of root relevant to above ground parts was quite big, presented 53 66% under N 3 level(600kg·hm -2 ) of optimum fertilizer N. Coarse protein content of root continuously increased from 11 26% under CK treatment to 30 21% under N 5(900 kg·hm -2 ), showing that Rumex K 1 could deposit and regulate absorbed nitrogen and appeared resistent to nitrogen fertilization.

关 键 词：鲁梅克斯K-1 氮肥 肥效 施氮模型 杂交酸模 饲料作物 

分 类 号：S548.062[农业科学—作物学]