Analysis on the spatial distribution pattern and distribution diagram of Phyllobrotica armata Baly in springpruning mulberry field were carried out through field investigation.
通过田间调查，对春伐桑园中的桑蓝叶虫的空间分布型、分布图式进行了分析。
2
Branches that may look dead may not really be dead, so you will be able to tell during the spring before you start pruning avocado trees.
那些看起来已经坏死的枝条可能并没有真正死掉，这样在春季修剪时，你就能够判断该修剪哪些枝条了。
3
Prune in the dormant season --- pruning in late spring could create an entry point for dogwood borers.