51results about How to "Reduce reproductive rate" patented technology

The invention discloses a method for managing a lawn by collecting, breaking stems, planting and cultivating. The method comprises the following steps: collecting grass seeds: taking grass in a grass seed lawn bed, and while taking the grass, selecting pest-free, weed-free and robust grown seed stems of the current year; breaking stems: cutting off long stems so as to cause the stem section of the stems to be 4-6cm long and the number of each section of buds to be 2-4; storing according to a natural storing method or storing at low temperature; sowing stems; spinning; performing water management: before the stems survive, maintaining humidity of a sand bed being 80-90%, and after the stems survive, maintaining humidity of the sand bed being 65-80%; and trimming the lawn: trimming 1 / 3 long tip of the stems each time and keeping 2-3cm height. The invention also discloses a grass breaking device which comprises a grass breaking box with a grass inlet and a grass outlet, wherein a grass breaking screw rod with grass breaking teeth is arranged in the grass breaking box; one end of the grass breaking screw rod is driven by an idler wheel; an idler wheel motor is connected with the idler wheel; and a soil shaking device and a soil pushing device are arranged under the grass breaking box.

The invention discloses a DNA molecule for expressing hairpin RNA for inhibiting a macrosiphum avenae lipoprotein lipase and applications thereof. The structure of the DNA molecule provided by the invention is SEQ positive direction and -X-SEQ reverse direction, and the sequence of the SEQ positive direction is 21st-563rd position of a sequence 1 in a sequence table; the sequence if the SEQ reverse direction is reversely complemented to the sequence of the SEQ positive direction; and X is an interval sequence between the SEQ positive direction and the SEQ reverse direction, and in the sequence, X does not complement to the SEQ positive direction and the SEQ reverse direction. Proved by an experiment, the DNA molecule is converted to be wheat, to obtain transgene lines for carrying out a aphid feeding test, and after a macrosiphum avenae eats transgene leaves, a lipoprotein lipase gene expression level and reproductive rate decrease. Thus, the DNA molecule provided by the invention has an important meaning for controlling insects in agricultural production.

An antibactieral composite fertilizer contains N and / or P and / or K fertilizer (10-90 wt.%), naphthalene (0.5-3), chlorothalonil (0.01-1), trichlorfon (0.05-1.2), phoxim (0.01-1.1) and auxiliary. Its advantages are rich nutrients, high insecticiding effect and increasing yield of crops.