Which insect pests should be controlled in the middle and later stage of rice?
Which insect pests should be controlled in the middle and later stage of rice? Please give an introduction and control methods to control pests in the middle and later stages of rice are as follows: 1. Control of rice planthopper: Rice planthopper mainly lives at the base of rice bushes and absorbs plant sap to yellowing rice plants and affecting yield. Selection of control agents: ① 25% Youlode wettable powder 30 grams per mu: ② 25% aldicarb wettable powder 100g per mu, 45 kg water spray control ③ 20% EC was sprayed with 100ml water and 45kg water per mu, and ④ sezinone or 10% imidacloprid 30g / mu was sprayed with 45kg water. 2. Control of rice borer: Rice borer causes withered heart or white ear after harming rice. Control agents are selected: ① 98% Badan raw powder is sprayed with 30g mixed fine soil 25kg / mu; ② 50% wettable powder is sprayed with 80g / mu mixed with water 45kg / mu; ③ 25% quinathion EC 150ml / 45kg spray control. 3, armyworm control: armyworm is a kind of migratory pest, which mainly bites leaves with larvae, resulting in missing or even eating up leaves. Control agents are selected: ① 25% enemy kill EC 40 ml / mu, spray with water; ② 50% diazinon EC, 50 ml / mu with 45 kg water spray. Click to get more rice planting techniques click to get more food crop planting techniques
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How to prevent rice stem borer?
How to prevent rice stem borer? Please introduce the methods of rice stem borer prevention can refer to the following methods: 1, agronomic measures. When the damaged plants of withered sheath, withered heart and withered ear are found, they should be pulled out in time, which can not only reduce the number of insects, but also prevent the larvae from turning into plants. 2. Chemical control. Reach the prevention and control finger.
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How to manage water and fertilizer in the middle and later stage of rice?
How to manage water and fertilizer in the middle and later stage of rice? Please introduce the management methods of rice water and fertilizer management in the middle and later stages can be referred to as follows: (1) prudent application of panicle fertilizer as appropriate to promote large panicles, full grains and high yield of rice. According to the early rice seedling growth and field diagnosis results, the soil fertility is high, water conservation and fertilizer conservation.
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