How to control rice Phytophthora?
Rice Phytophthora: the diseased field should be drained and sunburned in time, which can effectively restrain the spread of the disease. The key point of chemical control is to protect the seedlings of early rice at 3-leaf stage. Generally speaking, the medicine should be applied before or after anti-cold irrigation. The medicaments are: 50% carbendazim 1000 times solution; 50% topiramine or 50% benzoate 500 times solution; 40% Phytophthora net 500 times solution. The above fungicides are all sprayed and strive to spray evenly.
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Control of Underground pests of Wheat in Spring
The main underground pests are grub, mole cricket and golden needle worm, among which golden needle worm is the most harmful to wheat. The peak damage period of underground pests after the Spring Festival is from mid-March to early April. They bite off the roots of wheat, resulting in serious lack of seedlings and broken ridges, which have a great impact on wheat yield. In recent years, more and more underground pests have been treated.
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How to control rice bacterial brown stripe disease?
Control of rice bacterial brown streak: 20% Yekuning wettable powder 6000 times, 25% Dikushuang 1500 to 2000 times, 20% Shikujing wettable powder 300 to 2000 times (not suitable for use after heading); 1000 to 1500 times of benzoylamine can be used in seedling stage; 2: 1: 500 in this field.
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