论文部分内容阅读
一、引言 实践证明,山楂成龄树,在一般管理的情况下,单株产量可达100——200斤。在较好的管理下可达500斤左右,甚至更高。然而在放任不管的情况下,株产很低,仅有几十斤。由此可见,对山楂成龄树是否加以管理或管理是否得当,是关系着山楂产量能否大幅度增长的大事。 为摸清山楂成龄树栽培管理综合性措施中最佳组合,并加以实施推广,我们从1980年春开始进行该项试验研究,研究时间暂定三年,现将第二年试验情况小结如下。供参考。
I. Introduction Practice has proved that hawthorn trees, in the case of general management, the yield per plant up to 100 - 200 pounds. Under the better management up to about 500 pounds, or even higher. However, indifferent to the case, the strain is very low, only a few pounds. Thus it can be seen whether the management of hawthorn tree is appropriate or not, is related to the substantial increase in the production of hawthorn event. To find out the best combination of hawthorn cultivation and management of integrated management measures, and to implement the promotion, we start from the spring of 1980 to conduct the pilot study, the study time tentatively three years now the second year of the test are summarized below. for reference.