Early and mid-season rice is a foregone conclusion, and some will be harvested in the middle of September. This type of field does not require special field management. However, there is still a part of late rice that is in the stage of heading and booting. According to the rice varieties and growth period, the current rice field tube should do two things:
The first is to strengthen the later water management
At present, the early and middle months have entered the yellow maturation period, and indirect irrigation is used for this type of plots.
Many farmers now choose to grow large panicle varieties, and large panicle varieties have secondary grouting habits. If water is cut off prematurely, the 1000-grain weight of rice will be affected, and the seed setting rate will be reduced. Therefore, alternating wet and dry, dry and wet Wetness is appropriate, and it will not crack or wet when wet. If the surface of the soil is whitish, it is necessary to fill the water with a horse. It is not necessary to maintain the water layer.
For single-season late rice, the growth period is relatively late. It may be in the booting and heading stage, and the late direct-seeded rice planted between the Jianghuai and Huaihe Rivers, and the field should maintain a shallow water layer, because this is the peak period of rice water demand.
The second is to strengthen prevention and treatment of late-stage rice diseases and insect pests
Strengthening the prevention and control of late-stage diseases and pests of late rice, especially japonica rice and japonica rice, is mainly due to the weak resistance to both rice smut and panicle blast disease. Although the high temperature is harmful to the disease, the autumn has arrived, and the temperature difference between morning and evening is large. As night exposure increases, fog and haze will increase, and gradual decline in temperature will create conditions for the occurrence of these two diseases.
For the double-season late rice, it is now in the late stage of tillering and jointing stage. For this kind of field, the prevention and treatment of sheath blight is currently done to cure the leafhopper, and it can be used to control the aphids and the two repelling pests.
For the single-season japonica rice, the prevention and treatment time of various diseases has been missed. The main concern is rice planthopper and bacterial leaf streak disease (red leaf disease). Two kinds of diseases and pests can be selected: dichlorvos and sand fumigation.
For a single night, such as wheat indica rice, wheat seedlings of direct seeding rice, japonica rice, is in the period from booting to breaking, we should prevent heading diseases such as rice smut, panicle blast, and six or four generations of two pests, thin strip disease.
Prevent the appropriate period of control
The vertical control of rice has pods, the tip of the leaf just fights and the rice smut hits the medicine 10 to 15 days before the rice break. Late rice, especially the japonica rice, has a difference in timing of heading with the japonica rice, because the late temperature is low and the earing is slow. a little.
Rice blast is controlled once in the break period, and it is necessary to make good medicines for breaking the mouth. After seeing the weather, the weather is bad and the weather is not good enough. The sharp-mouthed scorpion and the big-bellied quail can not be thrown twice. For the first time, 10-15 days before the break, the control of rice smut, rice leaf roller, rice planthopper and sheath blight, thin strip disease, the second time during the late rice ripening period, which is to prevent the ear The main type of neckworms is the case of rice planthoppers, and the third time is after the rice is full of ears (five days after the second injection).
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