文献类型：期刊文献

中文题名：磷肥对不同结实能力马尾松无性系雌球花量及针叶氮磷营养的影响

英文题名：Effects of P fertilizer on female strobilus and needle N and P nutrition of Pinus massoniana clones with different fruiting abilities

作者：郑一[1,2] 张振[1] 范金根[3] 童庆元[3] 陈胜龙[4] 许志琪[4] 周志春[1]

第一作者：郑一

机构：[1]中国林业科学研究院亚热带林业研究所/浙江省林木育种与培育重点实验室,浙江富阳311400;[2]东北林业大学,林木遗传育种国家重点实验室,哈尔滨150040;[3]兰溪市苗圃,浙江金华321100;[4]兰溪市林业局,浙江金华321100

年份：2021

卷号：32

期号：4

起止页码：1184-1192

中文期刊名：应用生态学报

外文期刊名：Chinese Journal of Applied Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；PubMed;

基金：国家重点研发计划项目(2017YFD0600301);浙江省农业(林木)新品种选育重大科技专项(2016C02056-4);江西省林业科技创新项目(201703);中央级公益性科研院所项目(CAFYBB2017ZA001-2)资助。

语种：中文

中文关键词：马尾松;无性系;钙镁磷肥;雌球花;氮磷营养

外文关键词：Pinus massoniana;clone;fused calcium magnesium phosphate;female strobilus;nitrogen and phosphorus nutrition

分类号：S791.248

摘要：为实现马尾松无性系种子园精准施肥和丰产经营,用不同结实能力无性系作为材料,设置每株0、400、800和1600 g 4个磷肥水平(分别记为P_(0)、P_(4)、P_(8)和P_(16)),分别在花原基形成前和球果采摘后施肥,研究磷肥对马尾松无性系雌球花量的影响,以及花原基形成期和球花分化前期不同高度的针叶N、P含量的变化。结果表明:与P_(0)处理相比,P_(8)和P_(16)处理显著提高马尾松无性系雌球花量,2018年增幅分别为67.4%和61.2%,2019年增幅分别为28.9%和14.1%。雌球花量与针叶N含量和N/P呈显著负相关,与P含量呈显著正相关。不同结实能力无性系针叶N、P含量对P肥的响应存在差异。花原基形成期,结实能力弱的无性系N含量高,N/P值在11.5~12.5;结实能力强的无性系P含量高,N/P值在9.5~10.5,且在此时期大多数无性系在P8处理下P含量最高,N/P最低。球花分化前期,两种无性系N/P值分别在15.3~17.0和13.2~15.1。无性系上部针叶P含量显著高于中部和下部,而N/P显著低于中部和下部。综上,每株施800 g磷肥可提高不同结实能力无性系花原基形成期针叶P含量,降低N/P,有利于雌球花的形成,对提高无性系种子园产量具有促进作用。
In order to realize precise fertilization and high yield management of Pinus massoniana clonal seed orchard,clones with different fruiting abilities were used as the materials.Four P fertilization levels were at 0,400,800 and 1600 g per plant(P_(0),P_(4),P_(8)and P_(16)respectively).Fertilization was applied before floral primordia formation and after cone picked,respectively.The effects of P fertilizer on the female strobilus of P.massoniana clones and the changes of N,P contents in needles of different positions during floral primordia formation stage and early stage of flower bud differentiation were investigated.The results showed that compared with P_(0),the female strobilus of P_(8)and P_(16)were significantly increased by 67.4%and 61.2%in 2018 and 28.9%and 14.1%in 2019,respectively.There was a significant negative correlation between the female strobilus with the N content and N/P,a significant positive correlation between the female strobilus and the P content in needles.The responses of N and P contents in needles to P fertilization differed in clones with different fruiting abilities.In floral primordia formation stage,the N content of clones with weak fruiting ability was high,and the N/P was 11.5-12.5,while the P content of clones with strong fruiting abilities was high,and the N/P was 9.5-10.5.During this period,the P content of most clones under P8 treatment was the highest,while the N/P was lowest.In the early stage of flower bud differentiation,the N/P of two fruiting clones was 15.3-17.0 and 13.2-15.1,respectively.The P content in upside layer was significantly higher while N/P was significantly lower than that in middle and lower layers.In conclusion,the 800 g P fertilization per plant could increase the P content and reduce the N/P of needles during the floral primordia formation stage of clones with diffe-rent fruiting abilities,which was beneficial to the formation of female strobilus and promote the yield of clone seed orchards.