过去的文献记载过,用胶厂废水灌溉胶树是危险的,这是因为施氮过多以致树冠可能增大,从而加重风害。虽然如此,我们还是进行了试验以研究灌溉废水对成龄胶树的各种影响。混合废水(浓乳厂洗桶水8份,颗粒胶厂废水4份和乳清3份)的成份列于表1。对 It has been documented in the past that it is dangerous to use rubber plant waste water to irrigate a gum tree because of excess nitrogen so that the crown may increase, thereby increasing wind damage. Nevertheless, we conducted experiments to study the effects of irrigation wastewater on aging gum trees. The contents of the mixed waste water (8 parts of the concentrated milk tank, 4 parts of the granular plastic factory waste and 3 parts of whey) are listed in Table 1. Correct