【摘 要】
：
我市山楂树栽培面积2700余亩,但由于管理粗放,落花落果严重,产量低,品质差,严重影响了山楂生产的发展,为解决山楂生产上这一突出问题。近年来,我们在注重加强管理的同时,于
论文部分内容阅读
我市山楂树栽培面积2700余亩,但由于管理粗放,落花落果严重,产量低,品质差,严重影响了山楂生产的发展,为解决山楂生产上这一突出问题。近年来,我们在注重加强管理的同时,于盛花期施用赤霉素,使山楂产量有了较大幅度的提高。据试验,在山楂盛花期喷50ppm 的赤霉素,落花后30～45天测
Hawthorn cultivation area of more than 2,700 acres in our city, but due to extensive management, falling flowers serious, low yield, poor quality, seriously affected the development of hawthorn production, hawthorn production to solve this outstanding problem. In recent years, while focusing on strengthening management, we have applied gibberellin in full flowering stage, which has greatly improved the production of hawthorn. According to the test, in the hawthorn flowering spray 50ppm gibberellin, 30 to 45 days after falling flower measured
其他文献
CXA1034P是日本索尼公司生产的立体声耳机放大器用16脚双列直插式塑封集成电路,其内部原理框图如图1所示。CXA1034P具有电压(DC)自动调节功能,在电源电压Vcc在1.8～7.5V范围内
新会甜桔母树是作者1965年底在广东省阳山县发现,并于1976年12月正式定名。经20余年选育试种。证明它具有速生、早结、丰产、稳产、果大质优、适应性抗逆性强等优良特性,受
The amorphous ferromagnetic semiconductors[1,2] integrate the capability of manipulating electron spins with the intrinsic advantages of amorphous solids, such
超导是物理学中的一门子学科.超导有零电阻、迈斯纳效应(完全抗磁性)等现象.BCS理论给出了超导的微观起因:电子-电子通过吸引作用配成库珀对;库珀对的电荷为2e、自旋通常是0.
本研究目标是要确定所选的种植畦结构形式对网纹甜瓜产量和早熟性的作用,试验设计的4种种植畦结构形式为:①标准平顶畦(SF—T)成形的畦高15.2cm,平顶宽51cm,种子播在平顶畦
Graphene has vast promising applications on the nanoelectronics and spintronics because of its unique magnetic and electronic properties.Making use of an ab ini
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
妈妈们发现,到了这个年龄阶段,那个吃饱了就心满意足乖乖酣睡的小宝宝,再也找不回来了。尤其是每天的午睡,都快演变成妈妈和宝宝间的一场战争了。
Mums found that at this
A method for calculating the phase shift of a dielectrically loaded circular waveguide with smallellipticity is described.It gives an excellent result for enqi
There has been spectacular progress in the study on multiferroics, which is expected to make a realistic step toward an electrical control of magnetism or four