论文部分内容阅读
梨无公害栽培中的土、肥、水控制的好,树势就强壮,病虫害危害就相对较轻,梨园就可以少用或不用药剂,从而提高梨果质量。一、梨园的土壤管理1、深耕与深翻深耕能加深根系分布层,使根系生长发育良好,还可以使根系向土壤深处生长,提高抗旱能力和吸收能力,对复壮树势,提高产量和质量有显著效果。深翻能改善土壤深处的根系生长,有利于发生新根,防止越冬害虫,在盐碱地还能防止土壤返盐。2、客土和改土过砂和过粘的土壤都不利于梨树的生长,所以对无公害梨园的土壤分析应科学对待,砂土可以掺淤提高土壤肥力,黏土可以掺沙增加土壤透气性。3、地面覆盖梨园地面上覆盖草、秸杆、薄膜对抑制杂草生长,
Pear pollution-free cultivation of soil, fertilizer, water control is good, the tree is strong, pests and diseases harm is relatively light, pear orchard can be less with or without agents, thereby enhancing the quality of pear. First, the pear garden soil management 1, deep plowing and deep plowing deep plowing can deepen the distribution of root system, so that the root growth and development of good, but also make the root growth to the depths of the soil, improve drought tolerance and absorption capacity of the rejuvenation of the tree vigor, increase production and Quality has a significant effect. Deep plowing can improve the root growth of deep soil, is conducive to the occurrence of new roots, to prevent overwintering pests, but also in salt and alkali to prevent the soil back to salt. 2, the soil and soil improvement and over-sticky soil are not conducive to the growth of pear, so pollution-free pear orchard soil should be treated scientifically, sand can be silt to improve soil fertility, clay can increase soil aeration Sex. 3, ground cover Pear Field covered grass, straw, film to inhibit the growth of weeds,