After the early spring, the temperature rose and most overwintering pests were prepared to “have children”, such as larval rearing, emergence, and hatching in mid-to-late April. This period is a time when the pests have poor stress resistance. Seize this period of time to destroy the living environment of pests and diseases, and you can receive more effective control.

Spring ploughing, waterlogging, larval warts, larvae, and larvae are generally wintering in the rice borer, and they are pre-supplied in mid-April and in late April. At this time, the metabolism of the insect body is strong, the respiration is strong, the oxygen intolerance is lacking, and the effect of irrigating the water is good; the larvae of the larvae are also not resistant to hypoxia after the overwintering stage; the ploughing can also be used to pluck the plough; the empty plateau is suitable for plowing. , Early flooding; Green fertilization field strives to pour tillage on April 20 or so; Green manure leaves the field in the beginning of the green manure period and the flood season in the pre-flood period of the three fertilizers; the water depth is generally maintained at about 6 cm, 3～ After 4 days, the plants were drained; fields such as barley and rapeseed were sowed immediately after harvest.

In addition to wintering and phlegm-removing rice straw, there is also a part of wintering and phlegm-removing at the base of rice straw. Therefore, for paddy fields that are seriously endangered by SCP, the base of the rice straw can be removed around 13 centimeters around mid-April to burn off the fire or dig deep-water piles; if there is a serious situation in the rice stem borer, if it cannot be processed in time It can be used to kill moths with 90 dipterex 1000 times solution during the overwintering period; winter wheat disease is caused by conidium and hyphae overwintering on diseased rice straw and seeds, and becomes the source of the initial infection in the next year. Therefore, when straw is pulled, it is not necessary to use non-sterile straw stalks. If there is no straw, water can be boiled for 10 minutes before sterilization. The pig cow dung matted with straw must be fully cooked before being applied to paddy fields. Incompletely decomposed pig calf dung.

The nucleation of Rhizoctonia solani in saliva-stripping rice field is the source of Rhizoctonia solani; the occurrence of Rhizoctonia cerealis is aggravated with the increase of nucleus sclerotia in field; the occurrence of Rhizoctonia cerealis in rice is mainly due to the fact that a large number of sclerotia have fallen into the field during winter rice harvesting. Caused by: sclerotia can survive in non-flooding conditions for more than one year; such as in paddy fields after ploughing, timely salvaging slag, disinfection sterilization sources can reduce the occurrence of sheath blight; waste slag recovered to be promptly shipped To a place far away from the rice fields, buried or sunburned and burned.

Most of the weeds that weeded off the field were overwintered and spawned on the weeds in the fields. They were hatched in mid-May and later transferred to rice. Weeding the fields, trenches, embankments and roadside weeds before they are transferred can not only control the production of fertilizers, but also effectively control the occurrence of the first generation of large scales. At the same time, it can also reduce the occurrence of pests such as rice thin mosquitoes and rice red spot leafhoppers.

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