EARLY GROWTH AND FINAL YIELD OF AUTUMN SOWN VICIA-FABA L CULTIVARS GIVEN DIFFERENT FORMS OF FERTILIZER-N OVER WINTER
EARLY GROWTH AND FINAL YIELD OF AUTUMN SOWN VICIA-FABA L CULTIVARS GIVEN DIFFERENT FORMS OF FERTILIZER-N OVER WINTER
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DOI：
10.1007/bf02375147
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发表时间：
1986-01-01
期刊：
影响因子：
4.9
通讯作者：
TAYLOR, H
中科院分区：
文献类型：
--
作者：
ANDREWS, M;MCINROY, S;TAYLOR, H
在1983年11月3日至1984年4月9日期间，对4个秋播蚕豆品种施用了6次氮肥（铵、硝或尿素）。Banner Winter（BW）和Maris Beagle（MBg），耐寒品种通常在秋季播种，Herz Freya（HF）和Maris Bead（MBd），冷敏感品种通常在春季播种。通过与零氮（对照）植物的比较，确定额外的N的影响。施用氮肥，无论何种形式，在第一次取样时（1983年12月15日）对出苗率没有影响; BW、MBg和HF> 90%，但Mbd仅为40-60%。此时，所有品种的干重、碳含量和氮含量均比播种时的种子低约20%。1983年12月15日以后没有再出现植物。在1983年12月15日至1984年2月20日期间，所有品种的干重、含碳量和含氮量变化不大，但子叶中的总干重、含碳量和含氮量所占的比例下降，而根、茎和叶中的比例上升。1984年2月20日，没有N效应。所有品种，但特别是BW和MBg，表现出逐步增加的干重，碳含量和氮含量在1984年2月20日至1984年5月8日期间。所有四个品种的汇总结果表明，在1984年5月8日，给予铵和尿素的植物比对照具有更大的干重，碳含量和氮含量。收获时（1984年9月1日至3日），BW和MBg产量（g dw种子，m-2）HF和MBd。所有品种的汇总结果表明，无论形式的N的应用，增加了产量和增加的N浓度（毫克Ng-1 dw）的种子。
Between 3 Nov. 1983 and 9 Apr. 1984, six applications of fertiliser N (ammonium, nitrate or urea) were given to four autumn sown (26 Oct. 1983) Vicia faba L cutivars. Banner Winter (BW) and Maris Beagle (MBg), cold tolerant cultivars normally sown in the autumn, and Herz Freya (HF) and Maris Bead (MBd), cold sensitive cultivars were commonly sown in the spring. The effects of additional N were determined by comparison with plants given zero-N (controls). Application of N, regardless of form, had no effect on % emergence at the first sampling (15 Dec 1983); > 90% for BW, MBg and HF, but only 40-60% for Mbd. At this time the dry weight, carbon content and nitrogen content of all cultivars was approximately 20% less than that of the seed on planting. No more plants emerged after 15 Dec. 1983. Between 15 Dec. 1983 and 20 Feb, 1984, all cultivars, regardless of N treatment, showed little change in dry weight, carbon content and nitrogen content but the proportion of total plant dry weight, carbon content and nitrogen content in the cotyledons decreased while the proportions in root, stem and leaf tissue increased. On 20 Feb, 1984 there were no N effects. All cultivars but especially BW and MBg, showed progressive increases in dryweight, carbon content and nitrogen content during the period 20 Feb. 1984 to 8 May 1984. Pooled results for all four cultivars indicated that on 8 May 1984, plants given ammonium and urea had a greater dry weight, carbon content and nitrogen content than controls. At harvest (1-3 Sep. 1984), BW and MBg outyielded (g dw seed in m-2) HF and MBd. Pooled results for all cultivars indicated that application of N regardless of form gave increased yield and an increased N concentration (mg Ng-1 dw) in the seed.