摘要
采用土壤养分状况系统研究法(ASI法),分析土壤养分状况及各养分对籽瓜与瓜籽的经济性状、瓜籽产量及收益的影响,确定各养分对籽瓜产量与效益的贡献率。结果表明,各养分对瓜籽的纵、横径无影响,N、P、K、Fe可明显提高单瓜鲜重、单瓜籽重、产籽率、瓜籽百粒重和出仁率,Cu、Mn、Zn则降低了单瓜籽重、产籽率和出仁率;各养分显著地提高了瓜籽的产量与经济效益,N仍是制约籽瓜产量的关键因素,其次为Zn、P,养分限制顺序为N>Zn>P>Fe>Mn>Cu>K;各养分对籽瓜产量与效益的贡献率大小有差异,氮素仍是增产、增收的主要限制因素,微量元素与钾素逐渐成为瓜籽产量与收益的限制因素。
Soil nutrients system evaluation method was adopted to study soil nutrients effect on economic characters, yield and income of seed-melon, the distribution ratio of nutrients to yield were analysed also. Result show that every nutrients don＇t affect lengthwise and sidewise diameter, N, P, K, and Fe may distinctly improve economic characters, which include single melon weight, melon seeds weight per melon, melon seeds output ratio, one hundred grain weight of melon seeds and kernels output ratio, and Cu, Mn, and Zn decrease some of economic characters, which include melon seeds weight per melon, melon seeds output ratio, and kernels output ratio; every nutrients distinctively increase yield and income of seed-melon, N still is key factor to limit seedmelon yield, next are Zn and P, the order of nutrients limit to yield is N〉Zn〉P〉Fe〉Mn〉Cu〉K; and the contribution of every nutrients to yield and income of seed- melon are different, N still is main limited factor, trace elements are being limited factors obviously.
出处
《干旱地区农业研究》
CSCD
北大核心
2007年第3期28-31,共4页
Agricultural Research in the Arid Areas
基金
中-加合作PPI/PPIC项目
关键词
籽瓜
产量效益
土壤养分
seed-melon
yield and economic character
soil nutrients system evaluation method
