枣树专用叶面肥施肥技术及其肥效

Study on Fertilizing Techniques and Their Effects on Special Foliage Fertilizer for Chinese Date

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。对不同时期果吊比和单果重分析结果表明 ,花期喷施枣树专用叶面肥可显著提高红枣座果率 ,喷肥 1次较对照 (喷水 )果吊比提高5 9.3 % ;幼果期喷施具有保果、促进幼果生长发育之功效 ,喷肥 1次较对照果吊比提高 1 9.2 % ,单果重增加1 2 .7% ;膨个期喷施可促进枣果膨大 ,喷肥 1次较对照单果重增加 6.4%。单株产值多重比较分析结果表明 ,枣树专用叶面肥的最佳施肥方案为花期 1次 ,幼果期 1次 ,膨个期 2次。最佳施肥方案与对照相比 ,单株产量提高 5 3 .6% ,单株产值提高 64.3 %。

Applying techniques and effects of special foliage fertilizer on Chinese date is tested and studied by adopting orthogonal design.The results of the ratio of date fruits to bearing branches and single date weights investigated at various stages showed that spraying the fertilizer at blooming period could obviously raise the bearing rate of Chinese date,spraying 1 time could raise the ratio of the fruits to bear branches by 59.3% compared to control(spraying water);Spraying the fertilizer at young fruit stage prevents young dates from dropping off and promoted their growth,spraying 1 time increased the ratio of date fruits to bearing branches by 19.2% and single date weight by 12.7% compared to control;spraying the fertilizer at fruit enlarging stage promotes date fruits to enlarge, spraying 1 time raises single date weight by 6.4% compared to control.Multiple comparison of single tree production value showed that the optimized spraying scheme was sprayed by the fertilizer 1 time at blooming period,1 time at young fruit stage and 2 times at fruit enlarging stage.The optimized scheme increased single tree yield by 53.6%, and single tree production value by 64.3% compared to control.