Technical measures of Rice Intermediate Tillage Management in Eryuan County

From last autumn to June this year, the high temperature weather of continuous drought occurred in Eryuan County, which brought varying degrees of losses to small spring crops and some large spring crops could not be sown normally. The county agriculture bureau has taken various scientific and technological measures to actively deal with natural disasters such as extreme drought, and strive to achieve the "spring loss and spring replenishment" and the annual production target. In rice production, we should pay attention to various backbone measures, such as improved varieties, dry cultivation, sparse planting and shallow planting, soil testing and formula fertilization, accurate quantitative cultivation, high yield establishment and so on. Scientific and technological personnel go deep into the front line of agricultural production, pay close attention to scientific and technological training, and strengthen the arrival rate of practical techniques for increasing production. The planting of 137000 mu of rice in the county ends in normal seasons. At present, the growth of rice is good and balanced, which lays a foundation for high yield. In view of the current fertility process, the following main management measures are proposed:

1. Management techniques of tillering stage in field

The key points of management are: transplanting rice seedlings in shallow water, tillering in thin water, chemical weeding and early topdressing.

1. After transplanting rice seedlings, the water depth is generally covered with mud. As the saying goes, an inch of water turns green and thin water tillers.

2. Chemical weeding should be carried out in time according to the field conditions. It is required that 50g/ / mu of paspalum weed powder should be used 7 days after transplanting, 50 kg of fine sandy soil should be evenly spread, shallow water management within 5 days after application, the use of pentachlorophenol should be strictly prohibited, and prometryne should be used as little as possible to reduce agricultural non-point source pollution.

3. To apply tiller fertilizer in time, we always advocate the application of middle fertilizer at one time, but the fields where there is no base fertilizer or insufficient application of middle fertilizer when planting seedlings, compound fertilizer or available nitrogen fertilizer must be applied in time within 15 days after planting. Special emphasis is placed on rice, which was previously used as a garlic field and transplanted after June 5, to apply middle fertilizer at one time and avoid topdressing as far as possible.

4. To strengthen water management, we should insist on living trees with an inch of water, tillering with thin water and drying the field with enough tillers. That is, when the number of tillers of rice reaches 85-90% of the target panicle, timely drying the field, controlling the maximum number of tillers, reducing ineffective tillers, increasing panicle rate and large panicle rate, applying zinc sulfate to some cold-soaked fields, draining and drying fields, and dry-dry and wet management.

5. Ploughing and weeding as early as possible can improve the transformation of nutrients, promote metabolism, and make the seedlings grow early and grow healthily.

2. Management techniques from jointing and booting to grain filling stage

Key points of management: suitable for water booting, moist and strong seeds, good pest control.

The main results are as follows: 1. After drying the field and controlling the seedlings, intermittent irrigation should be carried out to keep the field moist, and the booting should be suitable for water to protect the seedlings and strictly prevent dehydration. Irrigation with shallow water at the beginning of heading.

2. Do a good job in the prevention and control of diseases, pests and rodents. ⑴ rodent damage: due to the serious drought this year, the degree of rodent damage has increased, especially from booting to heading stage, it is particularly important to do a good job in rodent prevention and control, and poison bait should be put in time. ⑵ armyworm and locust: from the analysis of the current weather situation, it is very beneficial to the occurrence of the two kinds of pests, which should be paid great attention to. Keep abreast of the dynamics of occurrence at any time to achieve early treatment, small treatment, and economic benefits. ⑶ rice blast: due to the severe drought in the early stage, the overcast and rain in the later stage will increase, which may induce the occurrence of the disease. In the late tillering stage, the booting stage and the first heading stage, the disease is controlled with 75% tricyclazole 30g or 40% Fuji 1 60m 70ml, or 40% thiocyclazole 200g per mu. ⑷ bacterial blight and rice false smut were controlled with 25% dikuning wettable powder 100g and 20% Jingangmycin 50g respectively.