环剥对玉泉冬枣生长、产量及果实品质的影响

为探讨环剥与玉泉冬枣树生长、果树产量与果实品质的关系,选取高接换冠3 a生(梨枣/酸枣)玉泉冬枣树进行了不同的环剥时期、环剥部位和环剥宽度试验,分别测定各环剥处理对果树生长、果实产量及果实品质的影响。结果表明:枣树花开到45%时环剥最佳,可溶性糖、可溶性固形物、Vc含量最高,分别达到23.9%、30.1%、350.1 mg/100g,而可滴定酸最低,只有0.21%,愈合时间为32 d,其坐果率高达2.66%,平均产量最高达8.3 kg/株;环剥II级主枝+留营养枝虽然坐果率不及I级主枝,但单果重、产量、可溶性糖均为最高,分别达到22.8 g、9.7 kg/株、23.9%,环剥II级主枝+留营养枝有利于提高产量和果实品质,效果优于其他环剥部位;环剥宽度为1/6时对果树产量、果实品质有一定的促进作用,但对果树生长有一定的不利影响,适宜的环剥宽度应结合树体的长势根据需要来判定,长势差的树环剥宽度应窄,长势好的树环剥宽度可适当放宽。

Effect of Girdling on Yuquan Winter Jujube Growth,Yield and Fruit Quality

In order to explore relationship between girdling and Yuquan winter jujube growth, yield and fruit quality, selected high grafting 3 years old (Lizao /Suanzao jujube) Yuquan winter jujube tree as experiments materials and girdling jujube tree through different times, parts, widths, and determined the effect of Girdling on fruit growth, fruit quality and fruit yield respectively. The results showed that:the jujube flowers to 45% by girdling was the best, soluble sugar, soluble solids, Vc content were the highest, reached 23.9%, 30.1% and 3501mg/kg respectively, the titratable acid minimum was only 0.21%, the healing time was 32 days, the fruit setting rate of up to 2.66%, the average yield of up to 8.3 kg per plant; although fruit setting of girdling level II main branch+vegetative branches was less than level I main branch, single fruit weight, plant yield, soluble sugar were the highest , respectively, 22.8 g, 9.7kg per plant, 23.9%, girdling level II main branch+vegetative branches was good for increasing yield and fruit quality, the effect was better than the other parts of girdling; when girdling width was 1/6, yield and fruit quality of fruit trees were improved , but had negative effects on fruit tree growth, suitable girdling width should be combined with the tree growth and need to determine, the girdling of the poor growing tree should be narrow, the girdling of the good growing tree should be appropriately relaxed.