冬前杏园如何管内容摘要:
2、熟化疏松土壤、改善土壤的理化性能;又可将躲藏在树冠下土层内准备越冬的害虫翻出地面,让鸟类啄食或冻死。 四、浇足冻水 在小雪前后进行冬灌,以促翌年春季延迟开花,能预防春霜危害,提高坐果率。 五、树干涂白 杏树冬季树干涂白,不但防治日灼和冻害,而且兼治树干病虫。 涂白剂的配制比例为:生石灰 10 份、石硫合剂 2 份、食盐 12 份、粘土 2 份、水 3640 份,可加点杀虫剂。 用水化开石灰,滤去碴砾,倒入已化开的食盐,再拌上石硫合剂和粘土。 涂时,以不流失和干后不翘、不脱落为宜。 六、覆盖秸草 冬季杏园采取覆盖秸草,能使土壤温度升高,预防生理干旱和冻害,从而减少了雌蕊败育,提高了花芽质量。 覆盖材料可用麦秸、野草、树叶等。 杏园全面盖草每亩用 2 吨,局部盖草需 1。 密闭后的杏园宜全面盖草,幼龄杏园局部(树盘或树行上)盖草。 覆草厚度一般为 1520 厘米。 风大的地区,盖草后星星点点地压些土,以防风吹草散。 专利查询。冬前杏园如何管
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