汉源县花椒土壤条件和硼肥对防治花椒落花落果的研究

STUDY OF THE EFFECTS OF SOIL CONDITIONS IN HAN YUAN COUNTY AND BORIC FERTILIZER ON FLOWER AND PREMATUR FRUIT DROP OF ZANTHOXYTUM BUNGEAMUM

通过对汉源县花椒土壤理化特性的分析表明,土壤有效硼含量为0—0.1445ppm,远远低于0.5ppm的临界值含量。土壤有效硼含量与花椒产量显著正相关(r=0.708)。土壤缺硼是导致花椒落花落果和低产的重要原因。花椒施硼肥能极显著地增加座果率,在花椒萌发期和开花末期分别以0.2％硼溶液根外喷施,能收到增加花椒座果率和提高花椒产量的良好效果。

The Content of effective boron in zanthoxytum bungeamum soils in Han Yuan County is 0-0.1445ppm. The value is much lower than the B critical (0.5ppm) of its growth. There is a significant positive correlation (γ=0.7058) between the conuent and its yield. B deficiency of soils is the main cause of flower and premature fruit drop of zanthoxtum. The yield and the rate of fruit—bearing of it are obviously increased by spraying 0.2 perc—ent boric fertilizer in the germinative and flowering phase.