平茬处理对日光温室香椿生长及香椿芽产量的影响

通过二因素随机区组试验设计,对1年生香椿实生苗进行了不同时间和不同留干高度的平茬处理,探讨了日光温室矮化密植栽培条件下香椿树势恢复生长和香椿芽产量的关系。结果表明,7月中旬平茬处理的香椿芽平均产量分别比8月中旬和9月中旬平茬分别增加17.64%和28.20%,不同时间40cm留干高度平茬处理的香椿芽平均产量较20cm和60cm处理分别增加11.24%和17.78%。其中以7月中旬实施平茬,留干高度为40cm时,香椿芽产量最高,达到1.50kg/m2。

The Influence of Heading Height Treatments on the Growth Characteristics and the Sprout Yield of Toona sinensis Roem in Greenhouse

The experiment was conducted with the method of random block layout in order to discuss the relationship between growth characteristics and sprout yield of Toona sinensis Roem in greenhouses under high density and low plant height cultivated condition.The stems of one year seeding were cut with different height at different stage.The results revealed that the yield of Toona sinensis Roem sprout increased 17.64% and 28.20% when the stems were cut at the middle of July than they were cut at the middle of August and September respectively.The yield of Toona sinensis Roem sprout increased 11.24% and 17.78% when the stems were cut with the height of 40cm than that they were cut with the height of 20cm and 60cm respectively.The highest yield of the treatment was the stems were cut with the height of 40cm in the middle of July,which came to 1.50kg/m2.