nutrients投稿

Hainan Mango fertilization current relatively backward technology, both at home and abroad for the changes of nutrient mango research older. Mango production in order to improve the management of the backward situation, we adopted in Sanya City of Hainan Province金煌mango leaves N, P, K, Ca, Mg, S, Fe, Mn, Cu, Zn, B, such as nutrient content of 11 kinds of full - year follow-up analysis, to draw a more comprehensive mango leaves金煌changes of nutrients, may be the growth of mango金煌cycle is divided into four phases: vegetative growth stage (5-9 months), reproductive growth period (September-November ), fruit enlargement period (on November -2) and fruit maturity (2-4 months). Various stages of changes in leaf nutrient content of different laws: vegetative growth stage, leaf nutrient content in addition to decrease in K, the other nutrients increased in varying degrees: reproductive growth, leaf nutrient elements N, B, Ca content increased, other elements have different degrees of decline. Fruit enlargement period: the leaves of N, K, Mn, Fe, Zn, B decreased, Ca, Cu content increased, P, S, Mg content has stabilized. Mature fruit: leaf N, Mn, Fe, B, Cu content increased in varying degrees, K, Ca, S, Zn content decreased. Throughout the reproductive period, the leaves of P, Mg, S, Zn and other elements do not change, showing jagged fluctuations. In this study, the current management of the new mode of mango cultivation nutrition diagnosis and management of nutrients has important reference value.

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The current Hainan mango applies fertilizer the technology falls behind relatively , the go into changing law at home and abroad to mango's nutrient can't compare obsolete. Aspect producing administrative falling behind for improving a mango, we analyse by the fact that N , P , K , Ca , Mg , S , Fe , Mn , Cu , Zn , 11 kind nutrition element contents such as B carry out annual tracking on Hainan province San Ya City Jin Huang mango in the blade, the nutrient reaching the Jin Huang mango blade comparatively all round changes law, but the period divides growth of Jin Huang mango into 4 stages: Nutrition growth periods (5-9 month) , reproduction growth periods (9-11 month) , fruit expand to expect (February in November) and fructescence (2-4 month). Every stage blade nutrient contents change law has institute difference: The nutrition element gets rid of K in the nutrition growth period , the blade besides contents come down to some extent , the others nutrition element has the power-up to varying degrees equally: Nutrition element N , B , Ca contents in reproducing the growth period , the blade rises , element contents have go down to varying degrees other. Fruit expands phase: N in blade , K , Mn , Fe , Zn , B contents come down , Ca , Cu contents rise, contents tend to become P , S , Mg stable. Fructescence: N , Mn , Fe , B , Cu contents have equally increasing by to varying degrees in the blade , K , Ca , S , Zn contents reduce to some extent. Within entire child-bearing period, in the blade, contents element change such as P , Mg , S , Zn seldom assume sawtoothlike form fluctuation. Both the diagnose studying cropping manages lower nutrition of pattern to at present new mango originally and nutrient general management have important reference value.

Dietary Changes and Health CareZqxAs is shown in the graph, China's food distribution has taken great changes from 1960's to 1990's According to this statistics of cereals, vegetable, meat, and fruits, the number of those who eat rice, flour or vegetable has greatly decreased in the past four decades. In contrast of this the number of those who eat oil or meat has sharply increased. From such dietary changes, we can perceive the rapid improvement of our people' s living 上海疯狂英语Why does this improvement occur? The direct reason is the fact that the Chinese people have attached much importance to their health care. Nationally, China's economic growth is booming, and more people are getting richer. Individually, everyone's consumption of food is increasingly varied. In particular, most of people are reluctant to eat much vegetable, but much meat and oil in their 上海疯狂英语In my view, the changes of China's dietary distribution seem to be both positive and negative. The positive aspect is that China' s economical growth has given rise to the higher level of dietary standard, with most of people living rich and happy. But the negative aspect is that, I'm afraid, less eating vegetable will lead to poorer health, such as lacking vitamin nutrients in one's body. Therefore, we think it necessary for the Chinese to be aware of the balanced diets: Lots of vegetable and meat, which may gain us healthier bodies in the new century. 通讯-Communication我要投稿Communication-通讯When men began to like together in small communities, they it was necessary to find ways of sending messages from one community to another. Even in earliest times there were several different ways this could be done. Really rapid communication was not possible until electricity was put to work. In 1844 the first electric telegraph was constructed. Thirty years later the telephone was invented. Soon a whole succession of inventions was produced: the wireless telegraph and the radio, the motion picture, and television. Earth satellites today bring valuable information almost instantaneously to our homes by means of electrical

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