Gao Shucaodan: High-efficiency, safe and safe use of seedlings after sowing

In order to ascertain the control effect of 90% high herbicidal oil on weeds in direct-seeded rice fields and the safety of rice, the Puyang plant protection and phytosanitary station was tested and demonstrated in June 2009.

For the weeds in the dry direct seeding rice field, weeds accounted for 27.3%, Qianjin accounted for 48.4%, Sagittaris palustris accounted for 14.1%, and other broad-leaved weeds accounted for 10.2%. After the seedlings were planted, they were treated before and after the seedlings. After sowing, 6 medicaments were set up before the seedlings, and 90% of the herbicides were used in 120 ml, 150 ml and 200 ml per acre respectively. Shi Tian made up 33% of pendimethalin EC and 150 ml of 42% ? Amine Emulsion 150 ml and clomazone 36% isopropanol microcapsule suspension 30 ml. One postemergence 1 leaf and 1 heart period were set up with two medicaments, namely, 90% of high-killing herbicide emulsifiable concentrate 150 ml and 2% of Indigenol 2.5% penoxsulam oil suspension agent 60 ml per acre. Each treatment was sprayed with 30 kg of water per mu. 40 days after the drug investigation control effect.

The experimental data showed that the control effects of the first 6 seedlings after seedling on grasses were 92.6%, 97.5%, 99.2%, 96.7%, 95.1%, and 97.5%, and the fresh grass control effect was 93.5%. 97.8%, 99.2%, 97.1%, 98.3%, and 97.7%; the control effects on broadleaf grass were 89.7%, 94.9%, 97.4%, 94.9%, 89.7%, and 92.3%, respectively. The fresh grass control effect was 88.7%, 94.4%, 97%, 94.2%, 88.2%, 92.2%. The control effect of two agents of one leaf and one heart of postemergence on grasses was 81.1% and 50%, respectively, and the control effect of fresh grass was 83.4% and 52.9%, respectively; The control effects of the strains were 79.5% and 64.1%, respectively, and the fresh grass control effect was 81.5% and 64.4%, respectively.

The test results show that 90% of the high-killing herb oil is used in direct-drying rice fields and has high control effect on single and dicotyledonous weeds and is safe for seedlings. After the sowing, the pre-emergence control effect was better, 150 milliliters per mu was used, and the control effects against the alfalfa grass, Qianjin, and broad-leaved grasses were 97.7%, 97.4%, and 94.9 respectively after 40 days. %. Therefore, in the production of drought-free direct-seeded paddy fields with a general level of grass damage and flatness, after sowing, the use of 90% high-aldosterol emulsifiable concentrate 150 ml per acre, can play a good grass control effect. For the severe grass damage, especially for the uneven surface of the plot, the dosage should be increased appropriately, and secondary medication should be considered if necessary.

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