枣果炭疽病防治的最佳时期及措施

The Study of the Best Period and Measure of Prevention and Cure on Anthracnose of Jujube

在7-9月之间,将感染炭疽病的枣树分成4个区,并对4个区进行仅补水、补水＋补肥、补水＋补肥＋喷洒药物及不作任何处理。结果表明：综合使用水、肥、药使炭疽病枣数目明显减少,最终,染病枣果数减少到零。枣果炭疽病的最佳防治时期是7月中旬的果实膨大期,而到9月中、下旬再对感染炭疽病的枣果进行防治效果不佳。

In recent years, the phenomenon that the anthracnose endangers jujube is grave, which have brought graving econornic losses to jujube agriculture and the country. From July to September, we divided those jujube trees infected with anthracnose into four zones and treated the four zones with different test. The first zone is not handled; the second zone is added supplemental water; the third zone is filled up water and supplemented fertilizer and the fourth zone is carried out filling up water, the supplementary fertilizer and spraying medicine at the same time. Then, the jujube tree of the first zone is given the same treatment which the fourth zone. The result indicated that the best prevention and cure an- thracnose of jujube was the period of inflate in mid-July; the amount of the jujube infected with anthracnose decreased obviously in the fourth zone, and the amount decreased to zero at last, and to mid-September and last-september, the prevention and cure to the jujube infected with was not curative effect.