施钾量对花生养分吸收及产量品质的影响

田间试验研究钾肥用量对花生生长、养分吸收、产量和品质的影响.结果表明,0～60kg/hm2范围内,随施钾量增加,花生荚果数增加,产量提高,60kg/hm2用量下,花生产量最高3640kg/hm2,比不施钾肥增产18.17％.0～90kg/hm2范围内,高施钾量可促进氮磷钾吸收,90kg/hm2用量下,花生粗脂肪含量最高为51.56％,比不施钾肥提高5.48％.超过90kg/hm2,增加施钾量导致花生养分吸收减少,荚果数下降,蛋白质、粗脂肪含量和产量随之下降.本试验条件下达到最佳经济效益的花生施钾量为63.3kg/hm2,产量可达到3611kg/hm2.

Effects of Potassium Application on Nutrient Absorption, Yield and Quality of Peanut

Effects of potassium application on the growth, yield and quality of peanut were studied in field experiment. The results showed that the yields and pods were increased along with potassium amount in- crease when application amount was less than 60kg/hm2, the highest yield was 3639. 88kg/hm2 and in- creased by 18.17% as compared with control when the amount of applied potassium was 60kg/hm2. Under 0-90kg/hm2 potassium fertilizer rate, applying potassium fertilizer could accelerate their ab- sorption of N, P and K, regulate the transportation and distribution of nutrients in peanut plants, in- crease the crude fat content in the kernel. The highest crude fat content was 51.56% and increased by 5.48% when the amount of applied potassium was 90kg/hm2. The absorption of N,P,K and the yield of peanut were decreased obviously when the amount of applied nitrogen was over 90kg/hm2. The best potassium application was 63.3kg/hm2 under this experimental conditions.