PP_(333)喷洒时期及次数对马铃薯生长和产量的影响——PP_(333) 在马铃薯上应用的研究之二

STUDIES ON APPLICATION OF PP_(333) TO POTATO PLANTS Ⅱ.THE EFFECT OF PP_(333) SPRAYED IN DIFFERENT STAGES AND DIFFERENT TIMES ON THE GROWTH AND YIELD OF POTATO PLANTS

本试验研究了PP_(333) 对马铃薯的喷洒时期及次数。结果表明,喷期在植株大现蕾期产量高,比对照增产27. 02%。不论55ppm 或100ppm,喷一次就足以抑制植株长势。

In this study it was shown that the right stage sprayed with PP_(333) for potatoplains was just before they were about to flower.Either 50ppm or 100ppm forspraying PP_(333) only once will be enough.