肥料和密度对蚕豆产量及生长量的影响

Effects of Fertilizer and Density on Yield and Growth of Broad Bean

通过研究不同密度和施肥水平对大粒蚕豆"通蚕鲜8号"产量及生长量的影响,得出在施肥组合为有机肥500 kg+40 kg P+10 kg K+5 kg N、密度为120 000株/hm2时蚕豆产量最高,达到3580.995 kg/hm2。高密度有利于蚕豆产量和株高的形成,而低密度有利于蚕豆叶片增长,NPK肥对叶苔数的增加和叶龄增长有一定的促进作用。蚕豆苗期即1月18日至2月27日期间叶龄增长速率为2.88小叶/d,开花结荚期即2月27日至3月29日之间叶龄增长迅速,达7.87小叶/d,同时,在此期间株高及叶苔数的生长速率也较高。蚕豆分枝的旺盛形成期为1月17日至2月18日,生长后期一些无效分枝会衰退。

In this study, the effect of different density and fertilizer levels on yieM and growth of large grain bean ＇ Tongoanxian 8＇ was observed. The result revealed that the highest yield of broad bean reached 3580. 995 kg/hm2which was obtained under the combination of fertilizer level of 500 kg organic fertilizer ＋ 40 kg P ＋ 10 kg K ＋ 5 kg N, and reached 120000 plants/hm2. High density was favorable for the promotion of broad bean~ production and plant height, and low density was advantageous to the leaf growth. NPK fertilizer promoted the number of liverwort and increase of leaf age to some extent. The leaf growth rate of broad bean was 2.88 leaflets per day in seedling stage from January 18th to February 27th. In the stage of flowering and pods formation, leaves grew more rapidly and reached 7.87 leaflets per day from Febnmry 27th to March 29th, and the growth rate of plant height and the main stalk pitch number was also higher at this period. During January 17th to February 18th, branches grew vigorously and rather rapidly, and some invalid branches declined in the later stage of growth.