假植树苗什么时候起好?

来源 :农业科学实验 | 被引量 : 0次 | 上传用户:nimabe
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
秋天,许多国营苗圃及育苗专业户,都忙着把第二年春天出售的树苗起出假植上。但发现有些专业户起树苗时间太早,假植时间也过早,造成苗木质量太差,烂根干梢现象严重,影响春季造林成活率。既使是树苗活了,但长势不好.其原因主要是:1、由于起苗太早,叶子未自然脱落,树苗木质化不好,也就是人们常说的“太嫩”。冬天一冻, In autumn, many state-owned nurseries and nursery professionals are busy planting saplings for sale in the following spring. However, it was found that some professional households saplings too early, fake planting time too early, resulting in poor quality of seedlings, rotten roots dry serious, affecting the survival rate of forest afforestation. Even if it is a sapling live, but the growth is not good. The main reasons are: 1, due to the early seedling, the leaves did not naturally fall off, sapling is not good, that is, people often say “too tender.” Winter one frozen,
其他文献
会议
请下载后查看,本文暂不支持在线获取查看简介。贵阳名胜——达德学校旧址@王萍 Please download to view, this article does not support online access to view profile. G
我县为发展柑桔生产,1983年春在西河、尚武两乡培育红桔砧苗十余万株。1984年9月—10月底,县多经站个别人员等承包了实生苗的秋季嫁接 My county for the development of c
板栗(Castanea mollissima)采收后加强科学管理,有利于恢复树势,防治病虫害,提高翌年产量。①翻地改土。在寒冬前进行翻地改土,其方法是:滩地、平缓坡地的成片栗园,可进行全
  Background: Open partial nephrectomy (OPN) remains the gold standard for treatment of small renal masses (SRMs).Laparoscopic cryoablation (LCA) has provided
会议
本文提出了一种数据信号在通信信道传输中附加干扰的抑制方法,该方法在实际应用中取得了满意的效果。 In this paper, a method to suppress the additional interference of