69results about How to "Do not use or reduce dosage" patented technology

The invention relates to a biological preventing and controlling strain of continuous cropping cucumber and watermelon blight and microbe organic fertilizer thereof, belonging to agriculture intensification production technologies. Trichoderma harzianum SQR-T037 having obvious biological preventing and controlling effect on cucumber and watermelon blight is separated, and the microbe organic fertilizer is prepared from the biological preventing and controlling strain and organic compost; the fertilizer contains more than 1*108 bacterial colony forming units per gram of the strain, the full nitrogen content is 3-5 percent (more than 90 percent is organic nitrogen), the total NPK nutrient content is 6-10 percent, and the organic matter content is 30-35 percent. An experiment indicates that the microbe organic fertilizer leads the biological preventing and controlling strain to be rapidly bred after being applied to the soil and forms a preponderant population in the soil, and the biological preventing and controlling rate of the blight in the soil having serious cucumber and watermelon blight reaches more than 85 percent. By applying the microbe organic fertilizer to the soil without forming continuous cropping obstruction for a long time, the preventing and controlling rate on the cucumber and watermelon blight reaches more than 80 percent.

The invention provides a PS mixture of compound biocontrol fungicide for preventing the soil-borne diseases of vegetables, belonging to the technical field of crop disease prevention and cure. The PS mixture consists of two biocontrol bacteria, namely PX35 and SM21 respectively. The PS mixture is prepared through the following steps: culturing the two bacteria by shaking at 180 rpm at the temperature of 37 DEG C in a PDA (potato dextrose agar) culture solution for 20 to 24 hours respectively; then, centrifugating at 4,000g for 10min; and preparing the PS mixture from humidin and thallus preservative fluid by a ratio of 1:40 and further evenly mixing by a ratio of 1:1, wherein, the total concentration of viable bacteria in the finished product is 1*10 to 1*10 cfu / ml. Under the greenhouse condition, the control effect of the PS mixture on the bacterial wilt of solanaceae crops is 67.40%, the control effect thereof on the plague of solanaceae crops is over 77%, the control effect thereof on vegetable root knot nematode is 58.59%, and the effect of growth promotion is obvious; under the field condition, the control effect is stable, the yield can be increased by 50% to 80%; and at the same time, the PS mixture can prevent the soil from hardening.