荔枝营养需求特点及其施肥技术研究

The nutrition characteristics of Litch chinensis and the fertilizer practice

通过采样分析,探明了荔枝的营养特点,并在此基础上提出了施肥技术。研究表明,叶片养分含量为N>K>P;各生育期叶片N变化不大,P、K则有逐步下降的趋势,显示后期需要补充P、K养分;花的发育必须有较多的P、K供应,果实发育后期必须有较多的Ca供应;中后期施用硫酸钾能提高荔枝的品质和产量。

The nutrition characteristics of Litch chinensis is explored by sampling and analyzing, and on this basis, the fertilizer practice is discussed. Results indicate that the contents of nutrients in the leaves of lychee are N > K > P; the content of N is relative stable, but the contents of P and K show a trend of decrease, and thus revealing the need for supplement of P and K in the late period of growth. The development of flowers needs more P and K, and the fruits in the late period of development need more Ca. To apply potassium sulfate in the middle and late periods can increase the quality and production of lychee.