叶面喷施烯效唑和硼对塔额盆地甜菜产量和含糖率的影响

旨在为塔额盆地甜菜生产提质增效提供新途径。在塔额盆地滴灌施肥条件下,以甜菜‘Beta 468’为试验材料开展田间喷施试验,设置4个喷施处理(CK、Un、B、Un+B),喷施处理后测定甜菜生长情况、干物质积累、体内碳氮代谢酶活性及产量和含糖率。叶面喷施烯效唑、硼及烯效唑和复配与CK相比,根长分别增加了7.38%、14.76%和19.68%,总干物质积累增加了10.98%、13.32%和17.60%。块根硝酸还原酶活性提高了12.5%、37.64%和54.07%,蔗糖磷酸合成酶活性提高了37.73%、60.24%和69.31%,蔗糖合成酶活性提高了32.95%、45.43%和21.22%,转化酶活性提高了26.87%、35.79%和33.20%。产量较CK分别增加了10.77%、2.85%和9.97%,含糖率增加了0.47%、0.55%和0.79%,产糖量增加了13.93%、6.21%和15.31%。叶丛期喷施烯效唑和硼复配可促进植株生长、提高甜菜产量和含糖率。

Foliar Spraying Uniconazole and Boron: Effects on Yield and Sugar Content of Sugar Beet in Taer Basin

The aim is to provide a new way to improve the quality and efficiency of sugar beet production in Taer Basin. Under the condition of drip irrigation and fertilization in Taer Basin, the field spraying experiment was carried out with sugar beet ‘Beta 468’ as experimental material, and four spraying treatments (CK, Un, B, Un+B) were set up. After spraying, the growth, dry matter accumulation, carbon and nitrogen metabolic enzyme activity, yield and sugar content of sugar beet were measured. Compared with CK, foliar spraying of uniconazole, boron and compound uniconazole and boron increased root length by 7.38%, 14.76% and 19.68%, respectively, and the total dry matter accumulation by 10.98%, 13.32% and 17.60%, respectively. Root nitrate reductase activity increased by 12.5%, 37.64% and 54.07%, sucrose phosphate synthase activity increased by 37.73%, 60.24% and 69.31%, sucrose synthase activity increased by 32.95%, 45.43% and 21.22%, and invertase activity increased by 26.87%, 35.79% and 33.20%, respectively. Compared with those of CK, the yield increased by 10.77%, 2.85% and 9.97%, the sugar content increased by 0.47%, 0.55% and 0.79%, and the sugar yield increased by 13.93%, 6.21% and 15.31%, respectively. Spraying compound uniconazole and boron at foliage stage could promote plant growth, yield and sugar content of sugar beet.