采用正交试验设计对枣树专用叶面肥施肥技术及其肥效进行了研究。

Applying techniques and effects of special foliage fertilizer on Chinese date is tested and studied by adopting orthogonal design.

本课题在两年的时间里分别在河北曲周实验站和中国农业大学共进行了七次堆肥和三次生物肥效实验。

Seven composts and three biologic effective experiments had been done for this subject in excitation of Quzhou of Hebei Province and China Agriculture University in two years.