In the past few days, many friends have asked me about the platform. When will the ear fertilizer be applied? Below I will share with you the platform:
At the beginning of July, rice is at the end of effective tillering - early stage of jointing. At this time, the focus of field management is to control the ineffective tillering, promote the growth of effective tillers, and provide a good growth basis for rice panicles.
(1) Controlling invalid clubs
The tiller of rice only begins to root when it grows the third leaf, and it can live independently without relying on the mother stem. Therefore, before the jointing, the new tiller must reach at least 3 leaves to safely become the ear, and for the less than 3 leaves, the tillers are Ineffective tillering, should control its growth, and supply all nutrients to effective tillers. The following methods can be used to control invalid scores:
1. If the growth is too strong, the leaves are dark green and black, and the main stems and the number of tillers per square meter of rice reach 450 or more, and the fields are drained in time to control the ineffective tillers. Sunshine standard: The soil surface produces small cracks, and the color of the rice seedlings is obviously lightened. Generally, it is suitable for drying for about one week.
2. For plots with long potential differences and insufficient tillers, deep irrigation control is ineffective.
(2) Applying panicle fertilizer in time
This year, the whole province, the rice transplanting late, the number of tillers is less than in previous years, in order to speed up the growth of seedlings, many farmers over-application of nitrogen fertilizer, the application of nitrogen fertilizer is concentrated in the tillering stage, it is likely that the emergence of spikes, maturity decline, according to this In the case, it is recommended to apply appropriate nitrogen and potassium fertilizers according to factors such as changes in leaf color and pre-fertilization.
1. The role of panicle fertilizer
Applying panicle fertilizer can promote the formation of large ears, regulate the nitrogen and potassium contents of leaves, increase photosynthesis, extend the functional period of leaves, and increase 1000-grain weight. Get high yields. When the rice is booting, if it can combine pest control and disease prevention.
2. The period of application of panicle fertilizer