摘要
木薯是世界第五大作物。氮磷钾施用量的高低影响木薯的生长势强弱、产量高低、品质好坏。综述氮磷钾施用量对木薯植株生长势、产量及块根品质方面的影响研究,研究表明：（1）氮磷钾的重要性顺序依次为N〉K2O〉P2O5。（2）氮磷钾施用量为150～200 kg/hm2（N）、50～120 kg/hm2（P2O5）、150 kg/hm2（K2O）时,生长势最优。（3）N肥与K肥施用量对产量的影响呈一元二次方程。施P量与产量的关系呈线性加平台方程或一元二次方程。（4）当N、K肥处于中、低水平时,随着P肥含量的增加而略有增高;N、P肥处于低水平时,干物率、淀粉含量与施K成正比;当P、K肥处于低水平时,施N水平的高低对干物率影响不大。（5）目前较为缺乏氮肥水平对木薯块根形成影响的研究。
Cassava is the world’s fifth major crops. NPK application rates influence growth potential growth strength, yield and quality of cassava. This paper reviews studies that the effects of NPK application rates on the growth potential, yield and root quality of the cassava plant and its related research. The conclusions are as follows：（1）the importance of NPK is in the order of N〉K2O〉P2O5. （2） the cassava get its best growth potential when the NPK application rates are 150～200 kg/hm2 （N）, 50～120 （P2O5） kg/hm2 and 150 kg/hm2 （K2O）, respectively. （3）Effects of N and K application rates on yield show a quadratic equation. Effect of P application rate on yield shows a linear plus platform equation or quadratic equation. （4）When the N, K rates are at the middle or low level, the dry matter content and starch content increase slightly with the increase of P rate. When N, P rates are at the low level, the dry matter content and starch content are in proportion to K rates. When P, K rates are at a low level, the N rate has little effect on dry matter content and starch content. （5） Currently the study on the relationship between nitrogen levels and quality of cassava roots is insufficient.
出处
《中国园艺文摘》
2015年第11期72-76,共5页
Chinese Horticulture Abstracts
基金
现代农业产业技术体系建设专项资金资助项目(CARS-12-cssy)
关键词
木薯
氮磷钾
生长势
产量
品质
块根形成
broccoli （Brassica oleracea var. botrytis）
variety screening
biological organic fertilizer
agronomiccharacters
yield
