Effects Of The N, P And K Fertilizer On The Pea’s Growth

Compared with the developing countries, the pea cultivation has a great gap in our country,especially blind fertilization in production. That not only adds to the cost, but also has an influence onthe quality and quantity of peas, resulting in the lowering the production benefit. In my research, I testedthe real quantity demanded of peas for N, P and K, and different contents of active N, P and K on peagrowth and output. According to that, we can make optimized fertilization scheme, which providesscientific basis for reasonable fertilization during pea’s production. Therefore, the research has a greattheoretical value and practical significance.The research shows that different amounts of the fertilized N affect outputs greatly. With theincrease of the fertilized N, the output has a slight increase, the N level (165mg/each plant)is the highest,after that, it has a sharp decline with the increasing fertilized N. The N has a little effect on the pods perplant and the weight per pod.. Chlorophyll content is positively correlated with the N fertilizer, and theN level (205mg/each plant) reaches the peak, which shows we should fertilize more in growth earlierstage of peas and fertilize less or nothing in the later. The plant dry weight and the dry weight of wholeplant will increase slightly before a steep decline. It shows too much fertilization lead to burning theplants in the later, which affects the normal growth of the plants. As a result, it is appropriate to fertilizeless at a later growing stage.The P plays an important role in improving the pea output, which will have a significant increase,and the P level (60mg/each plant) reaches the peak. During the stage, if the P fertilization is increasedproperly, the output will be improved accordingly. The chlorophyll’s contents enhance with theincreasing amount of applied P fertilizer. Compared with the others, the content of the chlorophyll in theP level (60mg/each plant) is the highest. The plant dry weight is closely associated with the amount ofthe P fertilization, which shows proper much more P fertilization can add to the plant dry weight.The relation between the K amounts and the pod weight and number per plant is not obvious.However, the seed number and weight per pod will increase slightly, but the change is very little.Different K amounts have almost no effect on chlorophyll contents. There are two measured results withsmall amplitudes, but no obvious tendency can be found. The measured plant dry weight and the dryweight of whole plant will increase slightly with the increase of the K application rate.The absorption of N, P and K is different in pea growth period. The research has revealed that weshould pay attention to the N fertilization during the earlier stage, which stimulates the vegetativegrowth. Meanwhile, in order to have a high production, we should focus on fertilizing the P and K,besides, it is essential to improve the pods per plant and outputs per plant. The dry pea seeds per100kgrequire the N3.8kg, the P1.4kg and the K3.6kg, which is2.8:1:2.7.