The reasons for poor control of weeds in direct-sowing rice fields mainly include: high density of weeds, increase in resistant weeds (Maomaotang, Qingtong, Jinguwei, and Leeshi), poor dry soil conditions. , Backwater is not timely, herbicides and grass are not the right way, the amount of medication is not enough, the amount of water is not enough, improper use of pharmaceuticals and so on. In response to this situation, how to make up for weed control and drug remedies, summed up three points (two supplements and one rescue).
Two supplements
One supplement: rice fields rebound and the remaining grass weeds (resistant barley, resistant crabgrass)
Rice field rebounds and remains of broad-leaved weeds (Iron leeks, water bamboo leaves, and three-edge grass)
1. Gramineae program: 10% Bispyribacin 20-30 ml + 50% Dichloroquinolinic acid 50g + vegetable oil synergist (Reminder: Dipyridamole not to be used in indica rice) / (oxazolam-a The use of compound agents) Han Qiuhao or Qiuyue or rice Qingqing or Chunyue + dichloroquinolinic acid + vegetable oil synergist.
2. Broad-leaved Weeds It is recommended that you use imported dimethyl tetrachloramine salt (Australian Tiger) or compound imported clomazone (Naya Valley), and according to the occurrence of the field can also use dimethyl chlorofluoropyr, dimethyl. Combat pine, but it must be used in sufficient quantities.
If the density of broad-leaved weeds is large and the iron amaranth, wolfberry is the main: recommended dimethyl fluoxazone (Harry) + azosulfuron-methyl, dead grass will not rebound! , please avoid high temperature and light medication at noon.
Two supplements: Because of multiple application of rice, is a three-drug drug, nutritional supplementation to the rice (to avoid partial nitrogen fertilizer, you can add trace elements, such as: Warnon Dan, can Dan, etc.).
Yishou
For the timely remediation of paddy crops in time, you can use Bihuo+Antaisheng or American Star Foliar spraying.
It is recommended that we combine herbicides with bio-stimulating hormones for herbicide damage. First, we can knock down weed resistance sites. Second, we can quickly improve the rice's own detoxification function and stimulate rapid rice growth. This is called weeding. Do not delay.
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