磷、钾肥对广东甜玉米抗性及产量的影响

Effects of Phosphorus and Potassium Fertilizers on the Resistance and Yield of Sweet Corn in Guangdong

甜玉米具有丰富的营养且具有甜、鲜、脆、嫩的特色而深受消费者青睐,尤其深受广东人喜欢。但在广东地区,因受当地气候影响,甜玉米常常会发生倒伏现象和各种病害,这严重影响了甜玉米的产量和品质。本试验在常规施肥的基础上,研究增施磷、钾肥对甜玉米的抗性和产量的影响。结果表明:在常规施肥的基础上,增施磷量在0-120 kg/hm^2、钾量0-100 kg/hm^2范围内,甜玉米抗性随施用量的增加而增强,产量也随施用量的增加而增加;而增施磷量超过120 kg/hm^2、施钾量超过100 kg/hm^2时,甜玉米抗性和产量都开始降低。由此表明在广东地区种植甜玉米,可以适当增施磷、钾肥提高甜玉米的产量和品质。

Due to rich in nutrition with sweet, fresh, crisp and tender, sweet corn is popular among consumers, especially in Guangdong area. However, because of the local climate, sweet corn often lodged and various diseases, which seriously affected the yield and quality. Based on conventional fertilization, the effects of phosphorus and potassium fertilizer on resistance and yield of sweet corn were studied in this experiment. The results showed that on the basis of conventional fertilization, and the content of phosphorus and potassium in the range of 0-120 kg/hm2 and 0-100 kg/hm2, the yield and resistance of sweet corn increased with the increase of application amount, while the resistance and yield of sweet corn began to decrease when the amount of phosphorus was over 120 kg/hm2 and the amount of potassium was over 100 kg/hm2. This indicates that phosphorus and potassium fertilizers can be applied properly to improve the yield and quality of sweet corn.