CAJ | 학술논문

为确定绿洲灌溉区蓖麻栽培的最佳施氮量，采用田间试验方法，对不同施氮量下蓖麻产量和生物、营养性状的变化规律进行了研究。结果表明：（1）通过数据拟合得出：蓖麻种植的最佳施氮量为195 kg·hm-2，预计最高产量为8×103 kg·hm-2；（2）蓖麻株高、茎粗和穗数等生物性状总体上随施氮量提高逐渐增大，而主穗长、主穗种仁数、百粒重及产量均随施氮量增加呈现出抛物线变化趋势，其中产量峰值出现在施氮量200 kg · hm-2时，其余指标均在施氮量150 kg·hm-2时达到最高值；（3）在花果期，增加氮肥施用量能够促进蓖麻对氮素和钾素的积累，磷素积累量随施氮量增加呈抛物线上升的趋势，峰值出现在施氮量150 kg·hm-2时；（4）施氮量与叶片氮素、磷素含量表现出明显的相关性。蓖麻在灌浆期对钾素的需求很高，叶片钾素大量转移到穗部。
위학정록주관개구비마재배적최가시담량，채용전간시험방법，대불동시담량하비마산량화생물、영양성상적변화규률진행료연구。결과표명：（1）통과수거의합득출：비마충식적최가시담량위195 kg·hm-2，예계최고산량위8×103 kg·hm-2；（2）비마주고、경조화수수등생물성상총체상수시담량제고축점증대，이주수장、주수충인수、백립중급산량균수시담량증가정현출포물선변화추세，기중산량봉치출현재시담량200 kg · hm-2시，기여지표균재시담량150 kg·hm-2시체도최고치；（3）재화과기，증가담비시용량능구촉진비마대담소화갑소적적루，린소적루량수시담량증가정포물선상승적추세，봉치출현재시담량150 kg·hm-2시；（4）시담량여협편담소、린소함량표현출명현적상관성。비마재관장기대갑소적수구흔고，협편갑소대량전이도수부。
A field experiment was conducted to investigate the effects of nitrogen (N ) application on yield ,biological and nutritional properties of castor in irrigated oasis area ,with six N levels ,including 0 kg·hm-2 (N0) ,50 kg·hm-2 (N50) ,100 kg·hm-2 (N100) ,150 kg·hm-2 (N150) ,200 kg·hm-2 (N200) and 250 kg·hm-2 (N250) .The results showed that ,(1) the best N application was 195 kg·hm-2 ,and it could produce the highest castor yield (8 × 103 kg· hm-2 ) .(2) N application could promote biological character of castor e .g .plant height ,stem diameter ,number of ears .Main ear length ,number of seeds ,hundred-grain weight and yield of castor showed increase under appropriate N application (150 kg·hm-2 or 200 kg·hm-2) .(3) At flowering stage ,the accumulation of N and potassium(K) of castor plant increased with N application ,with the rate of 150 kg·hm-2 having the largest effect on phosphorus (P) .(4) There existed a positive relation between the rate of N application and the contents of leaf N and P .In addition ,at filling stage , K in leaf was transferred to panicle ,it suggested castor need abundant K at this stage .