新疆农业科学2012，Vol.49Issue(12)：2286-2291,2298,7.DOI:10.6048/j.issn.1001-4330.2012.12.022
钾肥用量对甜瓜生长发育、产量及品质的影响
Effect of Potassium Rate on Growth, Yield and Quality of Rock Melon
摘要
Abstract
[Objective] Study of melon under mulch drip irrigation cultivation conditions on the growth and development of melon and on its yield and quality. [Method] Through field experiments, effects of different rates of potassium; 0, 75, 150, 225 kg/hm2 on melon growth and development, yield and quality were studied under drip irrigation cultivation conditions. [Result] The results showed that: (1) With increased potassium amount, the fast growdi period of dry matter accumulation (Δt) prolonged. It extended 1-6 days with the K fertilizer treatments than that without K fertilizer treatments. The potassium increased dry matter accumulation in the Δt period; potassium in the fast growth period to deal with a single plant accumulation increased the weight by 95. 15 - 139. 67 g; the total dry matter accumulation rate with treatments of K0, K1, K2 and K3 reach maximum level 63, 66, 65 and 64 d after sowing, respectively. (2) The rational application of potash fertilizer is conducive to the melon stem growth. The stem with K2 processing in maturation period is re- spectively 3.49 and 3.17 mm higher than those with K0 and K3 processing. (3) Chlorophyll content and sugar content reach their maximum with the amount 150 kg/hm2 of potassium. (4) Significant stimulation effect of potassium is found on the melon, and the yield reaches the maximum of 31 223 kg/hm2 with the amount of potassium in 150 kg/hm2. [ Conclusion ] The optimum economic application rate of potassium is 116 kg/hm2 by the simulation of a quadratic equation.t关键词
钾肥/甜瓜/产量/品质Key words
potash/ rock melon/ yield/ quality分类
农业科技引用本文复制引用
陆雪锦,张炎,胡国智,李青军,胡伟,冯炯鑫..钾肥用量对甜瓜生长发育、产量及品质的影响[J].新疆农业科学,2012,49(12):2286-2291,2298,7.基金项目
国家自然科学基金(40961017) （40961017）
国家西甜瓜产业技术体系项目(CARS-26-NO.15) （CARS-26-NO.15）
国际植物营养研究所项目(NMBF-Xin-jiang-2011) （NMBF-Xin-jiang-2011）
