Alar又名B一九,或名B995,(N-二甲胺基琥珀酰胺酸)近年来曾经以之对果树进行了广泛的研究,表现出对树株的生长和苹果品质有显著的良好影响。虽然施喷Alar使果形缩小,但用 1000ppm以下的低浓度喷液或推迟喷期到8月,就可降低这种不利的影响。施喷Alar可增进果肉硬度并延长果实的贮 Alar, also known as B-19, or B995, (N-dimethylaminosuccinamic acid) has been extensively studied on fruit trees in recent years and has shown to have a significant positive effect on tree growth and apple quality . Although application of Alar reduces the shape of the fruit, this adverse effect can be reduced by spraying at a low concentration of 1000ppm or less or by delaying injection until August. Spraying Alar increases fruit firmness and prolongs fruit storage