CAJ | 학술논문

试验通过N_0、N_(90)、N_(180)、N_(270)、N_(360) 5个施氮处理,采取随机区组设计,研究了江苏扬州地区不同氮肥施用量对高丹草Sorghum hybrid株高、茎叶比、产量及其不同器官的氮素分配的影响,并对其经济效益进行核算.试验结果表明:施氮肥可明显增加高丹草种植的经济效益,2008年增收最高达6 046元/hm~2;产量与株高均随着施氮量的增加而增加,第1茬在处理N_(360)最高,第2茬和第3茬在处理N_(270)时最高,而施肥对茎叶比的作用主要在第2茬;高丹草植株全氮多集中在叶片,高氮处理大于低氮处理,不同器官的全氮含量叶片＞全株＞茎＞叶鞘.
시험통과N_0、N_(90)、N_(180)、N_(270)、N_(360) 5개시담처리,채취수궤구조설계,연구료강소양주지구불동담비시용량대고단초Sorghum hybrid주고、경협비、산량급기불동기관적담소분배적영향,병대기경제효익진행핵산.시험결과표명:시담비가명현증가고단초충식적경제효익,2008년증수최고체6 046원/hm~2;산량여주고균수착시담량적증가이증가,제1치재처리N_(360)최고,제2치화제3치재처리N_(270)시최고,이시비대경협비적작용주요재제2치;고단초식주전담다집중재협편,고담처리대우저담처리,불동기관적전담함량협편＞전주＞경＞협초.
Based on the randomized block design for five nitrogen fertilizer levels of N_0, N_(90), N_(180), N_(270), N_(360). Effects of fertilizer N on the height, the stem/leaf, yield and the organic distribution of nitrogen on Sorghum hybrid in Yangzhou region of Jiangsu province were studied, at the same time the economic benefit was accounted. The results indicated that application of nitrogen fertilizer increased the economic benefit significantly. The highest increase was 6 046 yuan/hm~2 in 2008. The yield and plant height increased with the increase of nitrogen fertilizer, the fertilizer of N_(360) was the largest amount in the first crop and the fertilizer of N_(270) was the largest amount in the second and third crop. However, the effects of the nitrogen fertilizer on the stem/leaf mostly perform the znd harrest stage. The total nitrogen of S. hybrid concentrated mostly on the leaf, and the high fertilizer N treatment was larger than the low fertilizer N. The contents of total nitrogen in different organs varied as the leaf＞the whole plant＞stem＞sheath.