5results about How to "Long growth cycle" patented technology

The invention provides a method for preventing and controlling tomato bemisia tabaci by using nesidiocoris tenuis, and relates to the technical field of pest prevention and control. The method comprises the following steps: S1, raising seedlings of tomatoes, and transplanting 20-25 days after raising the seedlings; s2, according to an intercropping mode that two rows of kidney bean planting belts are arranged every 3-4 rows of tomatoes, the kidney beans are arranged in a staggered mode and planted in different periods; s3, after tomato seedlings are planted, the density of the nesidiocoris tenuis in the kidney bean planting zone and the density of bemisia tabaci on tomato plants are monitored in real time, and the nesidiocoris tenuis is supplemented according to the monitored value; s4, performing field management. According to the method, the kidney beans and the tomatoes are intercropped, the kidney beans are used for providing a good survival and inhabitation environment for the nesidiocoris tenuis, good disease and pest prevention and control can be achieved in the whole growth period of the tomatoes, meanwhile, the yield of the tomatoes and the kidney beans can be improved, and economic benefits are increased.

The present application relates to a series of compounds methyl trifluoroborate and methyl trifluoroborate nonlinear optical crystal and preparation method and use, the molecular general formula of the series of compounds is A3[CH3BF3]X2, wherein A=NH4, K, Rb, Cs, X=[NO3], Cl, Br, the molecular weight is 207.86-641.37, top seed method is prepared, orthorhombic system, space group Cmc 21 (No.36), the cell parameter is a=11.9141 (17)-12.6254 (2) Å, b=8.1556 (12)-8.4654 (17) Å, c=10.9621 (14)-11.5625 (15) Å, α =90, β =90, γ =90, Z =4, V=1065.2 (3)-1261.9 (1) Å 3 The series of compounds methyl trifluoroborate nonlinear optical crystal obtained by the method has the advantages of wide light transmission waveband, stable physical and chemical properties, moderate mechanical hardness, not easy to break, easy to cut, polish processing and preservation and the like.

The application discloses a gene for regulating growth and development of tomatoes, a knocking-out method and application, and the nucleotide sequence of the gene is shown in SEQ ID NO.2. The knocking-out vector is constructed by designing CRISPR / Cas9 guide RNA for the PHO2 gene in the tomatoes and utilizing a pCC carrier. The knocking-out plant of the PHO2 gene is obtained by using tissue culture and agrobacterium infection, and the PHO2 gene is identified to be knocked out by Sanger gene sequencing. The growth cycle of the tomatoes can be prolonged and the continuous flowering and fruiting capacity can be maintained by knocking out the gene of SEQ ID NO.2.

The utility model relates to a greenhouse technical field especially relates to a kind of photovoltaic light-heat collaborative water circulation heat storage systems for plateau greenhouse, it include: pedestal, the pedestal top middle part is equipped with sunken groove, the sunken groove middle part is provided with heat storage pond, the sunken groove top rear side is fixedly connected with heat preservation wallboard, the heat preservation wallboard top is fixedly connected with heat preservation inclined roof, the heat preservation inclined roof is provided with light-transmitting framework between sunken groove front end, the top of the heat preservation inclined roof is fixedly installed with photovoltaic board, the back of the photovoltaic board is provided with heat recovery component, the front end of the heat preservation wallboard is evenly fixedly installed with a plurality of water storage bags, the heat recovered by heat recovery component is stored in the water in a plurality of water storage bags, when temperature is lower than the set threshold at night, hot water in water storage bag is injected into heat storage pond, the utility model provides a kind of photovoltaic light-heat collaborative water circulation heat storage systems for extending the growth cycle of agricultural operation.

The application discloses application of leptin in preparation of a medicine for promoting hair growth, and belongs to the technical field of biological medicines. The leptin provided in the application is expressed in hair matrix cells of a growing hair follicle, activates a JAK-STAT signal path, and induces continuous proliferation of hair matrix cells, so as to promote the hair follicle to enter the growing period in advance, prolong the time length of the growing period of the hair follicle, promote differentiation of the hair matrix cells into keratinocytes, maintain continuous growth of the hair shaft, and further prolong the length of the hair shaft.