Nutrition Effect Of The Macroelements On Cut Chrysanthemum

As one of the largest four varieties in world cutting flowers market, the consumption ofcut chrysanthemum was ranked at second in the world. Although the domestic relativeresearch about cut chrysanthemum started late, China has a long cultivation history onchrysanthemum. The suitable climate, low production cost and appropriate environmentprovide a huge space for its development in China. So the key of its development is topromote the problems in technical level, standardized management and large-scale production.In order to study the influence of the macroelements on cut chrysanthemum ‘Jinba’, theorthogonal test from multiple perspectives was set in this research. By measuring the effect onappearance quality, nutrient absorption and photosynthetic characteristic, we hope to explore ascientific formula combination. The experiment found the macroelements had a greatinfluence on the quality of ‘Jinba’. The results are shown as follows:1. The change of cut chrysanthemum in morphology charactersThe appearance morpholopy were influenced by nutrition. Without phosphorus in thevegetative period, the plant failed to grow normally, even supplemented later then also cannotrecovery its height and achieve the standard of cut-flower’s height. While the stem diameterand deficiency symptom can return to normal.The way of fertilization to improve the appearance quality in the optimal formula.Thetreatment of15(A4B3C2D4E1) was the best combination for the quality of ‘Jinba’. That meansusing no humic acid, applying fertilizer of NPK front to later stage and setting proportionelement20:9:18, with2.0g per plant nutrition intensity by55%-45%stage of apply. Thebetter combination A2/4B1/4C2/4D2/3/4E1/2/3/4was found in comprehensive analysis, namelyphase element with fertilizer of NP-NK or NPK-NPK by50%-50%or55%-45%, theproportion element20:9:18or15:15:15, and nutrition intensity should apply more than1.0gper plant, while the humic acid was optional.2. The change of cut chrysanthemum in photosynthetic charactersThe combination A2B2C1/2D2/3/4E1was beneficial to generate chlorophyll, namely in theearly stage using a humic acid, phase element with fertilizer of NP-NK by40%-60%, the proportion element19:11:14or20:9:18and nutrition intensity should apply more than1.0gper plant.Under the same intensity of nutrition, low plant had a higher photosynthetic capacitybecause of concentrated distribution of nutrition. Compare with the higher plant whichachieved the standard of cut-flower’s height, phase element with fertilizer of NP-NK had abetter stability than applying fertilizer of NPK front to later stage. When nutrition intensityapplied0.5g per plant, its capacity was poor.3. Through the studied, the research of five factors on cut chrysanthemum ‘Jinba’ werefound as follows:(1) Nutrient elements to cooperate in different growth stages. In preliminary stage applyfertilizer of NP, and later stage use NPK.(2) The stage of fertilization. Performance is inconsistent.(3) The proportion of N-P-K. According to the test, the proportion used in market of15:15:15can achieve the normal plant’s nutritional requirements.(4) The intensity of nutrition. The plant grows strong when total amount fertilizationover1.5g per plant.(5) The application of humic acid. Aim at the experiment, no need to use the humic acidunder the condition of matrix.