At first glance, the temperature of fertilization is high, the fertilizer is decomposed quickly, the rain is high, and the fertilizer is easily lost. When fertilizing, a small number of ways should be adopted, and the decomposed farmyard fertilize…

First, the lack of yellow and yellow nitrogen deficiency. The yellow leaves begin to yellow from the tip of the old leaves, then gradually extend from the stems and leaves to the heart and leaves, and finally develop into yellow-green in the whole plant. Seedlings grow slowly, and yellow seedl…

Release date: 2016-03-08

On January 14, the US Food and Drug Administration officially approved a new type of weight loss medical device. Unlik…

First, the soil fertilizer conditions. Legume crops should not be used for continuous cropping, and fertile soil should be selected. Mushi 2000-3000 kilograms of farmyard manure, 40 kilograms of phosphate fertilizer, 15 kilograms of potash fertilizer should be used as base fertilizer, and plou…

Previously, one day before the second International Human Genome Editors' Summit, He Jiankui announced that a pair of genetically edited twin sisters named Lulu and Nana were born in China in November. This is the world's fi…

The gas chromatograph injection system includes a sample introduction device and a vaporization chamber. To obtain good …

The quality of shrimp feed, in addition to advanced production equipment and reasonable process flow, is its guarantee, raw material quality, grinding particle size, mixing uniformity, granulation temperature and moisture, moisture after pellet cooling, finished product water resistance and po…

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Bay scallops are hermaphrodites. Its rapid growth and development, the spring cultivation of the seed, breeding to the autumn (shell up to about 5 cm), the gonads mature, and can be used as pro-shell eggs breeding seedlings. The smallest biological type is 2.2 cm. The gonad is confined to the …